* mu4e: fix a few compiler warnings / typos
* mu4e: fix typo in Makefile.am
* mu-query: better handle empty lhs/rhs in date intervals
* mu4e: fix mu4e-message
Document what happens if either the left or right part of a date range
is omitted.
Merge pull request #233 from sje30/master

* update mu-find.1 with an explanation of date ranges with an empty lhs or rhs