docs: Improve comments about Game

Update version to v1.12.0-alpha

Update version to v1.11.0-rc.1

thread: Fix comments

Fixes hajimehoshi#1121

cmd/ebitenmobile: Bug fix: .exe was requried on Windows

On Windows, executable files must have .exe extension, or
exec.LookPath since exec.LookPath checks %PATHEXT%.

This fixes the issue that ebitenmobile didn't invoke the original
gobind wrapper and then didn't include and compile some Java files.

Fixes hajimehoshi#1096

Fix missing js build tag (hajimehoshi#1088)

Added js to build tags as suggested by @hajimehoshi

Fixes hajimehoshi#1087

cmd/ebitenmobile: Use 'go' directly

See golang/go#26845.

graphicsdriver/opengl: Enable to compile with gldebug

buffered: Bug fix: Resolve pixels when DrawTriangles is called before…

… the main loop

Fixes hajimehoshi#1052

Update Oto version to v0.5.4