emit warning instead of printing it
emit err instead of req on error
Merge pull request #7 from mafintosh/patch-1

No logs and fixed req getting emitted as error
basic udp tracker support
code style
handle some more edge cases, code style, add todos
add tests for udp client
0.3.0
add feature list to readme
tests: use publicbt.com

seems to have more lenient rate limiting
udp client: unify error handling
readme
unify udp tests to prevent hammering public servers

should help with rate limiting
0.3.1
unrefing timeout to not hang on stop