Colobot: Gold Edition - alpha 0.1.7 changelog [WIP]

General:
* Added SatCom button in main menu (#606)
* Added joystick configuration UI (#499)
* Implemented joystick force feedback
* Added language switcher to settings UI (#506)
* Pause game when in background (#609)
* Fixed rendering camera overlay color (#157)
* Progress on experimental GL21 and GL33 engines
* Changed camera navigation to use RMB + mouse movement instead of moving mouse to the edge (#709)
* Fixed lighting problems, this finally makes Gold Edition look more like original Colobot
* Removed dirt from water surface, this makes the water look more transparent
* Fixed choppy part rotation animations (#742)
* Fixed detecting flat terrain (#404)

CBot:
* Added CBot array initialization syntax (#698)
* Added function radarall() in CBot (#624)
* Fixed assigning to array from function (#728)
* Fixed ** CBot operator
* Fixed CBot debugger crashing with circular references (#434)
* Fixed CBot debugger crashing with full variable names longer than 100 characters
* Fixed displaying boolean variables in CBot debugger
* Fixed restoring CBot state from saved game (#199)
* Changes to auto-indent (#698)
* Fixed indentation on copying code (#699)
* Increased CBot editor double click time, fixes issues with double-click select (#688)
* Some fixes to CBot class inheritance, still not fully working (#540, #680)

SatCom:
* Documented comma operator in for loop (#727)
* Added Target1 and Target2 documentation (#734)
* Added documentation of ternary operator (#674)




Minor:
* Better GPU driver error detection
* Optimized some rendering code
* Rewritten shadow mapping implementation, this allows shadow mapping to work on some older GPUs
* Optimized text rendering (#215)
* Added higher quality planet textures
* Fixed function name conflict in "Remote control #4" exercise (#710)

Internal changes:
* Migration to SDL2
* A lot of CBot code cleanup, unit tests and documentation
* Commandline CBot interpreter for debugging purposes
* Added debug render of crash spheres (#400)

Minor changes and bugfixes:
* Logging to file (#696)
* Fixed lava particle effects (#659)
* Fixed water/lava moving and waves (#659)
* Fixed power cell / transported item not being destroyed correctly (#639)
* Fixed text input not working sometimes (#667)
* Fixed crash when damaging LRV (#665)
* Fixed "Help about selected object" not working (#695)
* Fixed bitwise NOT operation in CBot (broken by fix to #257 from previous release)
* Fixed NuclearPlant being available without research (#662)
* Fixed visibility/fog distance (#160)
* Fixed ExchangePost info being loaded twice (#671)
* Fixed some manual control being allowed in code battles (#644)
* Fixed TitaniumOre and UraniumOre not being destroyable (#635)
* Fixed game stuck in paused state after leaving code battle without starting it (#679)
* Fixed level unit scale parameter not being reset (#666)
* Fixed lag on saving programs on machines with slow HDD
* Fixed crash related to shadow map texture depth
* Fixed some bad characters in Polish translation in SatCom
* Fixed installing of translations when Python is not found
* Removed low CPU mode in interface