added content diff feature; added read URL data from file/Redis/configuration file; configuration file support; added output to file/Redis/STDOUT in configuration; code refactoring (currently unstable)
added content diff feature; added read URL data from file/Redis/configuration file; configuration file support; added output to file/Redis/STDOUT in configuration; code refactoring (currently unstable)

georgepsarakis/pitch,georgepsarakis/pitch