Major performance improvement for message indexing stage,
add index-only mode for testing,
improve handling of messages without message id,
remove fixed SSL cert checking as it is handled by set_default_verify_paths
Index gmail IDs for future use, fix "spelling" of gmail message id header
Add a note about whitespace in folder names with imaplib
minor fix
add some notes to self on how to load config.py from a custom location
improve console output, don't print progress messages unless stdout is a tty
typo/bug fix
Add a config option to print details of problem messages without enabling the other DEBUG output,
Add logic to handle messages with multiple ids, and with comments in the message id
Merge pull request #1 from Churten/master

Performance and bug fixes