Version 2.0.0

This not a completely new game, but still so many fixes and changes that
it deserves a major version bump.

New features:

• Animated game menus
• Always select difficulty and lap count after selecting "Play"
• "Cool down" laps for AI to prevent the destruction derby
• Bridge object as a mesh
• Font changed to DejaVu
• FPS setting menu
• Fully destructible tracks to make races more unpredictable
• New intro image
• New particle effects
• New randomized tree objects
• Editor: Add CLI option to force language
• Editor: Add option to force object stationary
• Editor: Lock qhash random seed so that XML output is not randomized

Improvements:

• Improved driving dynamics. It's now possible to do burnouts
• Improved graphics and lighting
• Improvements and additions to many tracks
• Sound levels tuned

Bug fixes:

• Fix GitHub issue #26: Undo resets tile rotations
• Fix GitHub issue #24: Change the game font to DejaVu
• Fix qmake build
• Fix some particle life times
• Fix some compiler warnings
• Fix shader deletion issues reported by Valgrind
• Fix clang build which attributes wrongly std=c++11 into C compiler flags
• Fix build with GLEW and QOpenGLFunctions=OFF
• Fix CMake dev build
• Editor: Fix object add on target nodes and other objects
• Editor: Fix the behavior of right-click
• Editor: Fix undo erasing computer hints
• Editor: Fix undo on target node resize and object rotation

Other:

• Translation updates
• Lots of code refactored