v0.15.0

= Changes from v0.14.1 =

switch between playmode and debugger
- using the ` key (immediately below the escape key)

ROM selector
- shows emulated/animated thumbnail for all ROMs

television
- better screen roll
- black level adjustment
- RF interference effect

audio
- new sound engine based on the work of Chris Bremmer
- more reliable buffering of audio. better tolerance of small frame drops
- audio tracker and piano keys window (Tools menu in the debugger and F9
hotkey in playmode)

debugger
- timeline window
- much faster rewind system. in particular, moving the emulation by
clicking on debugging screen is a lot more fluid

playmode
- rewind in playmode
- using mouse wheel or shift-arrow-keys
- playmode will drop to debugger on breakpoint, trap or watch (condition previously set in debugger)

temporarily removed
- gameplay recording and playback
- active pause screen