1. change callpeak --broad output to use broadPeak and gappedPeak
format; 2. scores for broadPeak are calculated as average in broad
region; 3. .c files were generated by Cython 0.19.1 to fix some weird
behavior that some internal references will be lost.
Correct gappedPeak format.
label 2.0.10.20130710: with fixes for output format.
Allow multiple methods being requested in 'bdgcmp'. Thanks Jon Urban!
update ChangeLog
Fixed output of broadPeak and modified bdgcmp option -T & -C

bdgcmp -T and -C are merged into -S. Check -S description for detail.
Update of changelog and version for release 20130713.
1. bdgcmp logLR output is fixed; 2. bdgdiff is fixed; 3. callpeak
--call-summit is fixed.
Add --max-gap to bdgdiff
Add back --d1 and --d2 for bdgdiff.
fixed a typo.
Update README.rst