Remove flip from subsong and archive buttons
Skip silence detection for HES files

This is hacky - HES files have a problem with GME's silence detection if
the end of a subsong is detected. This doesn't occur if a song reaches
a timeout instead of silence detection.
Correctly update flags when entering background

Modizer was not updating its flags when resigning active status 
while in the background, which meant that it interpreted its being
closed in the background as a crash.

This should prevent the spurious "Modizer has crashed" warning
that would frequently appear when closing Modizer.

Fixes #13.
Merge pull request #16 from mistydemeo/button_animations

Remove flip from subsong and archive buttons
Merge pull request #17 from mistydemeo/hes_hack

Skip silence detection for HES files
Merge pull request #19 from mistydemeo/safe_exit

Correctly update flags when entering background
v1.7 initiated
v1.7 initiated
v1.7 initiated
v1.7 initiated
v1.7 initiated
v1.7 initiated
Fixed some bugs. Improved display on retina screens.
v1.7 update in progress
v1.7 update in progress
v1.7
v1.7 - final