Добавил клиента transmission. Основа на библиотеке python-transmissionrpc.
Merge branch 'master' of https://github.com/mdevaev/rtfetch
Resolved #5: Implemented proxy support for fetchers
Version bump: 0.4
Colored tfile.printDiff() and rtfetch log, cli refactoring
Verion bump: 0.5
Colored rtdiff
Verion bump: 0.6
fetcherlib: added some constants
clientlib: static method customKeys()
Issue #2: Config file for rtfetch
rtdiff: using config
rtfile: fixed --size
rtfile: using config
clientlib.initClient() with validators
rtfetch: using clientlib.initClient()
rtload: using config
rtload: fixed missing --link-to
config: fixed mkdir_mode
config: fixed validators for rtload