Our version of underscore doesn't have 'partial' anymore since we
downgraded.

Missed one instance of this because I missed arrays in the EJSON support in
mongo testing.
Support 'tap' event.
Fix Opera test failures by reverting unnecessary part of 583508e.

Opera seems to have some consistent but difficult to diagnose bugs related to
using _.map in this context. (As in, minifying the test was difficult because
there seemed to be some odd action at a distance, but a given test failure was
fully reproducible.) This appears to work while still preserving the feature
added in 583508e.

Also fix a missing var (which does not appear to be the original problem).
Oops, didn't mean to revert test!
Oops, you can't use slice on arguments. This time tests actually pass.
History tweaks, notices, banner.
tweaks
Fix trailing comma that breaks JSON parsing.
Move http notices to package specific notice.
Bump example version numbers.
bump docs version.
Merge branch 'release-0.6.3'
Merge branch 'master' into devel