Replace stad JSON module by faster Oj.  All tests pass.
Update doc.
Automated merge with file:///Volumes/Users/roberto/Dropbox/HG/gmail-utils
Load order may not be the one we want, sort.
Add "--emails-only", we don't care about chats.
Welcome 0.5.2.
Added tag v_0_5_2 for changeset bfbd5a7113d9
Merge branch 'hg'