OpenBVE v1.11.0.0

Ths release contains a major new feature: Initial support for BVE5 format routefiles.
It would not have been possible without the hard work of @s520 and the parser library created by @aoisupersix

My thanks also go to @ginga81 and @zbx1425 for support, and most importantly Mackoy and Rock_On for the creation and ongoing development of BVE itself.

This initial release contains acceptable to good support for a large proportion of routefiles, albeit with some glitches, which are being worked upon.
AI trains are supported, but currently have no sound. Some animation effects are not currently supported.

Significant Changes:

• New: BVE5 routefile support.
• Change: A considerable number of improvements and fixes to the X parsers.
• Change: Better caching on reload for RouteViewer.
• Change: Update the DenshaDeGo! controller drivers. (MarcRiera)
• Change: Add workaround for BMP textures with an index outside of the color pallete.
• Fix: Unpredidicatable freezes on some Linux systems, by setting mesa_glthreads=false (JakubVanek)
• Fix: Changing from wireframe to back could unexpectedly reset GL.ClearColor.
• Fix: Lag when initially changing from cabview to external.