1st draft of source config spec
Remove sanity check routines, rely on built-in list feature of config.py
Making progress on MailSource
Making progress on mail sources
Testing the MailSource
Making the config manager more thread-safe
Refactor message scanning, make thread safe(r)
Improve rescan efficiency, stop dropping caches all the time
Started work on mailbox discovery, improved thread-goodness
Made mbox updates more stable, added code to clean outdated PTRS from index
Much progress on mail sources
Mail source migration and rescan appear to work now
Make inbox a special type of tag, clean whitespace
Fixed rescan counters and aborting behavior
PEP8
Progress on implementing correct new/inbox behavior
Outdated cruft
Support optional migrations, fix buglets in route migrator