Update of the release notes for V4.3

This updates the V4.3 release notes.
1) The release notes text is moved into a newly-created directory ReleaseNotes
2) Three images for the release notes are created in a subdirectory within
   the ReleaseNotes directory.
3) Light editing of the complete text of the release notes was done.

Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

ReleaseNotes/ReleaseNotes.txt

@@ -0,0 +1,416 @@
+// _Subsurface_ 4.3 Release Notes
+
+_Subsurface_ 4.3 - released December 2014
+---------------------------------------
+
+The _Subsurface_ development team proudly announces
+release 4.3 of _Subsurface_, an open source divelog and dive planning
+program for Windows, Mac and Linux.
+
+License: GPLv2
+
+_Subsurface_ can be found at: http://_Subsurface_-divelog.org
+
+Some of the changes since _Subsurface_ 4.2
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+_Subsurface_ now supports flexible filtering of the dive list. One can
+specify a combination of different criteria like tags, people who were on
+the dive, dive site, suit, etc. While filtering one can see how many dives
+match any of the criteria, and how many dives match the combination of the
+selected criteria (see image below)
+
+image::images/V4.3_Filter.jpg["Filter panel",align="center"]
+
+When editing a dive, one can now copy information about a dive
+and paste it into one or more other dives. This makes it easy to add the
+same equipment, buddies, tags or other aspects of a dive into a group of
+dives with similar characteristics.
+
+The dive profile now offers an easy to understand
+tissue saturation graph that shows tissue saturation at any
+point during the dive. (See image below)
+
+image::images/V4.3_CylBars.jpg["Cylinder bars and tissue saturation graph",align="center"]
+
+In the dive profile one can turn on an improved visualization of the
+gas combinations used during a dive (aka "tank bar" with different gases represented
+by different colours, see image above).
+
+Owners of the Heinrichs & Weikamp OSTC 2 and 3 as well as dive computers
+in the popular Suunto Vyper family of dive computers can configure the
+settings of their dive computers using _Subsurface_.
+
+For a number of dive computers _Subsurface_ now downloads additional data and
+shows them in a new tab on the screen. This includes (depending on the
+dive computer) information like battery levels, no fly times, Gradient
+Factors used during the dive, etc. This feature is enabled in all official
+_Subsurface_ binaries and includes the Uemis Zurich SDA. When building
+from source this requires a custom
+version of libdivecomputer (as explained in the INSTALL file).
+
+The dive planner now offers the ability to re-plan dives and to create duplicate
+dive plans in order to plan multiple scenarios.
+
+We added support for several new dive computers including the Suunto EON
+Steel, Aeris A300 CD, and Aeris F11.
+
+_Subsurface_ can now import dive logs from Liquivision and Cochran software
+as well as the new Suuntu DM5.
+
+We made many improvements for UDDF and CSV import, UDDF export now
+complies with the latest version of the standard.
+
+Many issues with the HTML export were addressed.
+
+Initial support for closed circuit rebreathers (CCR) and pSCR was added.
+Dive logs from the Poseidon MkVI
+CCR can be imported. Visualization of dive logs as
+well as dive planning should work - but this feature is fairly early in
+its development and we assume that there may be a few bugs and
+mis-features hidden in this area. Here is a dive profile for a Poseidon MkVI:
+
+image::images/V4.3_CCR.jpg["CCR dive profile",align="center"]
+
+*Other notable improvements*
+
+- Import of manually logged dives (e.g., from an existing paper logbook)
+  is now much better documented in the user manual. Instead of having to
+  individually enter each dive with the graphical profile editor users can
+  add all their dives in a spreadsheet and import the data from there into
+  _Subsurface_ in one single operation.
+- Many other small improvements to the planner
+- Many small UI changes for better use on small displays (tighter columns
+  and column headers on the dive list, the toolbox of icons no longer
+  forces a minimum height of the profile, etc)
+- Improvements on HiDPI displays
+- We fixed an annoying bug where when starting to edit a dive the pop-up
+  with completions would cover the edit line (this usually happened when
+  editing tags)
+- For the (rather unusual) dive computers that send a heading event in
+  every sample we automatically declutter the profile display now
+- The Windows installer is smarter: the 64bit installer refuses to
+  install its binaries on a 32bit OS and conversely the installer warns
+  you when installing 32bit binaries on a 64bit OS
+- Better synchronization with divelogs.de, including support for multiple
+  tanks
+
+*Known bugs*
+
+- There appears to be a bug in Qt: when changing the password needed
+  authenticate with a proxy, _Subsurface_ will not use the new password
+  until after a restart
+
+_Subsurface_ 4.2
+--------------
+
+The _Subsurface_ developer team is proud to announce the release of the
+next update of _Subsurface_.
+
+_Subsurface_ is an open source divelog program that runs on Windows, Mac
+and Linux.
+
+With _Subsurface_ the user can download dive information directly from a
+large number of supported dive computers. _Subsurface_ is able to track
+single- and multi-tank dives using air, Nitrox or TriMix. It displays
+a dive profile with all related information including air consumption
+and alarms. It also allows logging of information like weights and
+exposure protection used, dive masters and dive buddies, and enables
+the user to rate dives and provide additional dive notes.
+
+With _Subsurface_ the user can track dive locations including GPS
+coordinates (which can also be conveniently entered using a map
+interface). _Subsurface_ calculates a wide variety of statistics of the
+user's diving and keeps track of information like the user's SAC rate,
+partial pressures of O2, N2 and He, calculated deco information, and
+many more.
+
+_Subsurface_ allows the user to print out a detailed log book including
+dive profiles and other relevant information. The program is localized
+in about 20 languages and well supported by an active developer
+community. This community also made new and shiny offline manuals in
+Spanish and Russian possible.
+
+One of the major strengths of _Subsurface_ is its support of a wide range
+of dive computers (most common dive computers are supported with the help
+of libdivecomputer); a detailed list is in the SupportedDivecomputers.txt
+file. _Subsurface_ can also import existing dive logs from several sources
+including MacDive, Suunto DM3/DM4, JDiveLog and divelogs.de. Another
+strength is its ability to visualize the depth profile (and, if
+available, the tank pressure curve) in very innovative ways that give
+the user additional information on relative velocity (and momentary
+air consumption) during the dive through the coloring of the graphs.
+
+*Some of the changes since 4.1*
+
+- The Windows installer is now a 64bit installer including Qt5
+- There is still a deprecated 32bit installer including Qt4, but that has
+  several known issues (among others, printing has a number of bugs that
+  were fixed in Qt5).
+- The Mac installer has also been updated to Qt5
+- A current development version of libdivecomputer is used for the Windows
+  and Mac builds.
+- A Dive Planner got added again, using the graphical profile editor; it
+  supports different ascent speeds, backgas breaks during deco and many
+  other interesting features; it allows the user to print just the dive
+  plan (without graphic profile); one shortcoming is that currently one
+  cannot re-plan a planned dive, i.e., once you save a dive plan, you can
+  no longer edit / change the plan; you have to start from scratch again.
+  This is on the todo list.
+- Pictures can be associated with dives and shown in the profile
+- Printing is much improved (but see above), including a "1 dive per page"
+  mode, better rendering of dives (in our mind) and better data
+  presented per dive.
+- Data entry for dives is much more intuitive and consistent
+- We have a reasonably functional HTML exporter for the dive log (it's
+  still work in progress but already quite powerful, even though lacking
+  localization support).
+- Support to import dive log files from Seabear dive computers.
+- We added a user survey to learn more about the interests and needs of
+  out users
+- improved and extended user manuals
+- new translated user manuals in Spanish and Russian
+
+*Known issues:*
+
+- (Windows specific) Many Windows fonts don't support specific characters,
+  specifically subscript "2" (eg in pO₂). New installations of _Subsurface_
+  will automatically pick a font that contains this character, but if you
+  had _Subsurface_ installed on a specific system before, it likely has
+  saved the previous font in its settings. In that case the best solution
+  is to manually change the font to one that contains this character,
+  e.g. Calibri.
+
+- (Windows specific) When upgrading from _Subsurface_ 4.1, after saving of a
+  logfile the logfile's name may be listed a second time in the files menu
+  because of a change in the representation of logfiles filename in the
+  Windows registry.
+
+- There are a number of small inconsistencies in the UI when editing
+  multiple dives. For example, if multiple dives are edited and some of
+  them already have coordinates set, under certain circumstances the
+  changes aren't saved. To circumvent this bug only edit dives with the
+  same coordinates or edit the dives individually.
+
+- (Windows specific - only 64bit) If an ad blocker is used and set to
+  offline mode, the manual check for an update crashes _Subsurface_.
+
+- When using the globe / map widget to edit dive locations, double clicks
+  some times fail to set the correct position.
+
+- Sometimes the globe will show the same pane several times. Try to zoom
+  in or out of the location and give the system time to download the map
+  tiles in the background - on slower network connections this can take a
+  while.
+
+
+New in version 4.1 (compared to _Subsurface_ 4.0.3):
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- new and improved profile widget with animations, better info box, and
+  a new toolbox to turn on and off many of the additional graphs and
+  information displays
+- improved CSV import and added CSV export
+- import of exported log files from Sensus (CSV) and Shearwater Desktop
+  (XML)
+- improved UDDF and divelogs.de support
+- generalized import dialog
+- much improved consistency for dialog boxes, keyboard shortcuts, etc
+- improved error handling when downloading from divecomputer
+- export an HTML world map with dive sites
+- make backups before overwriting XML files
+- don't display unused cylinders in the equipment tab (this can be turned
+  off and the old behavior restored in the preferences)
+- lots of code cleanup, style fixes, improved consistency
+- improve Qt5 support (but there are still some visual oddities)
+- many improvements to the build infrastructure (out of tree builds,
+  ability to build without Marble, make WIP planner a config option)
+- more than 50 bugs fixed
+- new translation (Greek, British-English, Latvian, and Romanian)
+- experimental "check for updates" feature (mostly for Windows and Mac)
+- experimental undocumented alternative storage format
+
+
+New in version 4.0.3 (compared to _Subsurface_ 4.0.2):
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- fixed unitinialized variable bug that caused errors downloading from
+  divecomputers
+
+New in version 4.0.2 (compared to _Subsurface_ 4.0.1):
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- fixed potential crash when importing dive data without dive computer
+  model information
+- improve parsing of equipment data; this now accepts localized units
+  as well as input in units that are not the display units (so if you
+  run _Subsurface_ in metric, but went diving in a place where weights
+  are in US Pounds (lbs), you can now enter the weight in lbs and
+  _Subsurface_ does the right thing)
+- fix temperature conversion when downloading data from Uemis SDA
+- improve autocompletion to always be case insensitive
+- improve selection handling in the dive list
+- include event data in libdivecomputer dump
+- improve profiles generated for dives with no depth samples and no
+  average depth
+
+New in version 4.0.1 (compared to _Subsurface_ 4.0):
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- fixed several bugs handling non-ASCII text both in dive info text
+  fields as well as in Windows file names
+- added support for generating libdivecomputer log and dump files
+- many improvements for import and export of other file formats
+- XSLT files are built-in as resources, avoiding issues with not
+  finding them
+- support more GPS coordinate formats
+- fixed several bugs around editing of manually entered dives
+- fixed several bugs with entering data for weights and tanks
+- increase the number of tracked weight systems to 6
+- fixed font setting in preferences
+- improved look and feel when running dark themes
+- support older versions of Mac OS/X with default DMG (>= 10.5)
+- enable https in Windows binaries
+
+New in version 4.0 (compared to _Subsurface_ 3.1):
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+With version 4.0 the _Subsurface_ team switched to a different UI
+toolkit. This caused the need to do a complete rewrite of a large
+chunk of the _Subsurface_ code base. We decided to keep much of the
+logic and core of the existing code around, but used the opportunity
+for quite a bit of cleanup and many improvements.
+
+The basic concepts are the same, most of the basic features are the
+same, but trying to create a concise list of changes that summarizes
+the more than 1600 commits that have gone in since version 3.1 seems a
+daunting task.
+
+*Here are some of the highlights:*
+
+- new map widget with a spinning globe to visualize dive locations
+- much more "native" look and feel under Windows and Mac
+- ability to edit dives "in place": simply click on an entry in the
+  Dive Notes or Equipment tabs to start editing
+- more data about each dive is presented in the Dive Notes and can
+  be edited without separate dialogs and without having to go through
+  context menues
+- graphical editor for dive profiles for manually added dives
+- better information overlay for the dive profile
+- addition of a "ruler" tool in the profile window that allows
+  measuring of many properties between two points in the profile
+- better tag system with both predefined user-specified free text tags
+- better integration with divelogs.de (upload & download support)
+- ability to show the user manual from within the application without
+  a life internet connection and without opening the manual in an
+  external browser window
+- better statistics (with per-trip statistics available)
+
+*Known issues:*
+
+- Filter->Select Events is not implemented
+- Dive planner has been disabled for now
+- https support for divelogs.de on Windows is disabled
+
+
+
+New in version 3.1 (compared to _Subsurface_ 3.0.2):
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- track tags for dives (things like 'boat', 'shore', 'deep', etc)
+- enable filtering by tags
+- ability to modify events from a context menu in the dive profile
+  (this includes the ability to add gaschange events)
+- direct export / upload to the divelogs.de online logbook
+- import of Suunto DM4 files
+- improved printout formatting and printer dialog
+- support for color printing
+- dive planning: add option for last stop at 6m/20ft
+- added support for Heinrichs Weikamp OSTC3 and Suunto DX
+- native support for the Shearwater Petrel (much faster download)
+- various bug fixes
+
+
+
+New in version 3.0.2 (compared to _Subsurface_ 3.0.1):
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This update was mainly triggered by a bug in the handling of pO₂
+values read from CCR / rebreather dive computers. This bug can lead to
+incorrect data being stored in the _Subsurface_ XML file. Installing
+_Subsurface_ 3.0.2 and re-downloading the dives will correct the
+incorrect data. In order to re-download the dives connect your dive
+computer (this should only affect people with certain tec dive
+computers like the Shearwater Petrel or Predator that store pO₂ values
+read from a pO₂ sensor in their dive log), open the download dialog,
+check the box "Force download of all dives" and download your
+dives. After you save your data file the correct pO₂ data should be
+stored in the samples.
+
+If you are using one of those dive computers, have saved data files
+with _Subsurface_ 3.0 or 3.0.1 and have since deleted those dives from
+your dive computers, please contact the developers as we also have an
+experimental script that should be able to fix incorrect XML files -
+but re-downloading the data is the much more reliable way to address
+this issue.
+
+In addition to this bug fix, 3.0.2 brings a number of other improvements:
+- A Portuguese localization of _Subsurface_ was added.
+- _Subsurface_ now remembers its window size and pane layout the next time
+   it is started.
+- Several importers for data for third party dive software were improved.
+- Dives from the Heinrichs & Weikamp DR5 and from kenozooid can now be
+   imported into _Subsurface_.
+- A crash with localized versions of _Subsurface_ on Mac was resolved.
+- The map provider for the GPS maps is now configurable.
+- The layout of some dialog boxes was changed to improve usability on
+   small screens.
+- It is now easier to edit date and time of existing dives (and you can
+   now edit duration, maximum and average depth for dives that were
+   manually entered).
+- Several small bugs were addressed.
+
+
+New in version 3.0.1 (compared to _Subsurface_ 3.0):
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- Several bug fixes for importing log files from other divelog software;
+  especially imports from DivingLog should work much better now, but
+  also new importer functions for UDDF and UDCF
+- Fixes for SAC calculation and gas volume estimates at high pressures
+  (air and nitrox are NOT ideal gases in the physics sense)
+- Added Help link to the online user manual
+- Improved the user manual
+- random other bug fixes
+
+
+New in version 3.0 (compared to _Subsurface_ 2.1):
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- Many new divecomputers supported, bugfixes for existing divecomputers
+  - Cressi Leonardo, Seemann XP5, Mares Matrix, Mares Puck Pro, Mares
+    Nemo Wide 2, Shearwater Petrel, Shearwater Predator, Aeris A300
+    AI, Hollis DG03
+  - significant improvements for the Heinrichs Weiskamp OSTC
+- Significantly improved selection of divecomputers for direct download
+- Map display of GPS locations of dives and ability to enter and edit those
+- Improved automatic dive numbering
+- Data overlay for profile plot (with additional statistics information)
+- Zoom function for profile plot
+- Dive planner
+- Improved printing support
+- Improved dive trip handling
+- Support for downloading dives from multiple computers (so for example
+  both your main and your backup computer)
+- Added ability to import existing divelogs from Suunto DM3 (no manual
+  unpacking needed anymore), MacDive and divelogs.de
+- Lots of features to make tec divers happy:
+  - Experimental deco calculation with optional display of a calculated
+    ceiling (Buhlmann ZH16 with gradient factors)
+  - Display of deco information from some divecomputers that support this
+  - TriMix support
+  - CCR support (fixed or variable setpoint, on dive computers that support
+    this)
+  - Optional pO₂, pN₂ and pHe graphs
+  - CNS tracking for supported divecomputers
+- Lots of bug fixes