Show ChangeLog since last tag.
Show ChangeLog since last tag.

The script was change to automatically get the ChangeLog since last
commit.

kopchik/pyusb,makerbot/pyusb,rabryan/pyusb,rabryan/pyusb,karlp/pyusb,karlp/pyusb,AlanJAS/pyusb,swinman/pyusb,makerbot/pyusb,swinman/pyusb,AlanJAS/pyusb,h3nj3/pyusb,h3nj3/pyusb,kopchik/pyusb