Add new search expressions
retab
Fixed missing constants
Search flagged, answered, draft, spam, deleted
ObjC Interface
Fix documentation
Silence -Wshorten-64-to-32 warnings
Typos
DateNumber -> Date
Fixed #465: returns correct value for modseq
Merge pull request #466 from CodaFi/Search-all-the-things

Search all the things.
Improved charset conversion
Merge remote-tracking branch 'upstream/master'