Convert the tracker to a twistd plugin
Remove old tracker
Fix the tracker spawning on test_bootstrap.py
fix encoding check for V2 community
Do not stop dispersy/reactor more than once
Merge pull request #354 from LipuFei/fix_community_v2

Fix encoding check for V2 community
Merge pull request #352 from whirm/twistd

Convert the dispersy tracker to a twistd plugin
Initialize some variables in the constructor
Merge pull request #355 from whirm/initialize_fixes

Initialize some variables in the constructor
Start walking after adding the bootstrap candidates.
Merge pull request #356 from whirm/fix_bootstrap_delay

Start walking after adding the bootstrap candidates.