Atari Lynx emulator

Yay!

A new Felix release after two years and ten days!

Many changes and improvements with respect to debugging and stability.

Known issues:

Awesome golf and Scrapyard Dog hangs,
audio/video synchronization has a defect resulting in crackling,
few debugging features does not behave as flawlessly as they should.

This is the last (major-ish) release before much anticipated migration of the rendering engine to something multiplatform (likely SDL2).