Engine: * Show engine window centered on screen if not in fullscreen mode

Engine: * Reverted background textures overlapping by 1 pixel - breaks when using alpha channel

AfterAttack was issued twice

Return control as soon as Birdy begins to disappear

Birdy appears from off-screen

Feather: sprites was moved to another layer

Feather: sprite size fix

Feather: wrong constant fix

Birdy's falling feathers

Adding small to these has never been useful

* tweaked some random stuff in GSHandlers.inc

claymore_ would like rearranged as so. hearing no objections...

prg adds option to toggle girders in maze, adjusts some frontend strings

Engine: * Reduced steps' volume

Engine: * Added muffled underwater sound and splashes for homing bee.

prg tweaks maze

One more wacky generated map. bunch of islands suitable for islands shoppa.

* removed old hellishimpact.ogg * changed random impactsounds of HHgrenade to more general implementation

another ban for gstLoser

CMake: * Run FindLua every time, even if LUA_LIBRARY is already set

prg's maze generator

Add background color to translucent png to avoid gray borders when zooming

Updated spanish locale

Themes: * Updated all very small skyL/skyR textures to power of two dimensions to avoid artifacts