Tag v2.5.1

Tag v2.5.0

Mark 2.6.0git

Mark 2.5.1pre

RELEASE: This is 2.4.0git

Mark 2.3.0pre

DOCS: Fix link to the iOS Libraries

DOCS: fixes multiple small things

- changes colour of unselected tabs
- clarifies language option
- changes hierarchy of headings on game files page
- renames game files page
- fixes windows path
- corrects save game path info on Path page
-  renames Other Platforms to Platform Guides
-  standardises  Understanding Audio/Graphics pages

Tag v2.2.1-android

Tag v2.2.0