Add lookup table for Hedgewars key IDs instead of generating IDs on the fly This makes sure the key IDs never change. Previous implementation abused SDL_GetScancodeName to generate the IDs programmatically, which was not reliable and explicitly adviced against in the SDL documentation <https://wiki.libsdl.org/SDL_GetScancodeName#Remarks>.

enable sdl_mixer opus support if possible

allow running plaintext and tls servers in parallel

Change init theme to Nature

Change theme to Nature if changing from background-only or hidden theme to a generated map type

Change color of fallback border/land texture in Planes theme to brown

Fix some ugly weirdness in fallback land/border textures of Blox/Eyes themes

Space Invasion: Fix missing arg in math.min

Space Invasion: Fix possibility to go over shield limit with param

Space Invasion: Fix minor visual glitches of shield

Update changelog WRT sounds

Remove redundant PoisonCough/PoisonMoan sound files

Separate Yoohoo.ogg into "Yoohoo" voice and kiss sound Sound has been separated with mp3splt, so no quality loss

Poison taunts: Fall back to Default voice if missing

Update changelog WRT translations

Don't include Arabic in release (RTL support is broken)

Add yuenfu to credits for Chinese translation

Update Chinese (zh_CN, zh_TW) translation: Frontend and engine

Add Chinese (zh_TW) translation for campaigns and missions

SimpleMission: Fix incorrect documentation for distGearGear and distGearPos

SimpleMission: Fix Lua error spam when a goal fails

Add integerSqrt and integerHypotenuse to Utils lib

Select appropriate schemes when taking room control (bug #461)

Fix camera jumping around in touchscreen mode

Refactor mouse movement handling

add support for multiple ping probes

Fix some typos and minor grammar issues in main menu tips

Remove outdated main menu tip

Add extra button in main menu for opening credits page

add client timeouts