Test case for #1754
Bump mongodb to 1.4.12
release 3.8.18
now working on 3.8.19
Merge branch '3.8.x'

Conflicts:
	History.md
	package.json
release 3.9.4
now working on 3.9.5
fixed sharding assertion error messages
Merge pull request #2415 from LearnBoost/sharding-test-fixes

sharding-test-fixes
POC for #1987
gh-1987 updated tests to include both legacy coordinates and GeoJSON specifications