updated; driver to 1.3.23

As a side-effect, mongodb no longer passes the stats as a third
argument to a mapReduce callback unless the verbose option is set. To
provide backwards-compatibility, we will set it unless it is explicitly
unset.

Conflicts:
	package.json
release 3.8.4
now working on 3.8.5
findByIdAndUpdate will now respect the overwrite option
add test for 1809
fixed; ssl setting when using URI

closes #1882
release 3.8.5
Added get / set to reserved path list.

Using get or set in your schema results in exceptions in ./lib/document.js.
fixed; setting readPreferences

closes #1895
release 3.8.6
now working on 3.8.7
fixed; findOneAnd..() with sort

closes #1887
fixed; sending safe/read options in Query#exec

closes #1895
release 3.8.7
now working on 3.8.8
fix History
fixes link in the doc at
expose connection states for user-land
code highlight, syntax fixes

 - added JavaScript and shell code highlight
 - fixed some missing semicolon
 - replaced multiple var declarations with one
updated; mquery to 0.5.3

fixes #1914