v1.0002 googleads.g.doubleclick.net should be considered as paid cpc
v1.0001 Fixes
v0.8 Handle Google Adwords requests that don't have a referer
v0.7 Handle android-app:// referals
     Don't crash on unknown scheme
v0.6 Fixed dependency on perl 5.10
     POD fixes
v0.5 More known sources for organic and social traffic
     Dependency on perl >= 5.10
v0.4 Improved traffic detection for social sources
v0.3 Improved detection of google organic traffic
     Attempt to fix test for perl 5.8
v0.2 Fixed issue with CPAN installs
v0.1 First release