Add info about bug tracking and getting help
add default codec note on ogg exports to docs
Merge pull request #40 from jaymzcd/master

add default codec note on ogg exports to docs, jiaaro/pydub#35
first pass at implementing dynamic range compression
fix bugs and add tests for dynamic range compressions

This filter is still not very performant, but it *does* work :)
python 3 compatibility
assertLess is not available python < 2.7
Merge remote-tracking branch 'origin/DRC'
Merge branch 'master' of https://github.com/jiaaro/pydub