Make compression more intelligent: - we don't attempt to compress things under 44 bytes (empirical) - we check whether larger objects actually compress - we tag objects to indicate their compression NUL means uncompressed and starts with NUL x means gzipped and starts with x (handy) u means uncompressed, drop the u

.*\.orig
.*\.rej
.*~
.*\.so
.*pyc
build/.*
dist/
MANIFEST$