better protocol tests
changed reply format from array to hash
added next_id method to Mango::Protocol
better examples
better test for quad support
updated .travis.yml
slightly better test for quads
added count method to Mango::Cursor
added options to update and remove
changed default limit
fixed limit functionality in Mango::Cursor
include skip and limit in count
fixed rewind
fixed a few small timing bugs in Mango::Cursor
no travis until they start supporting a 64bit Perl
check query_failure flag
no need to sort documents
handle authentication failures better
test tweaks
small optimization