Simple implementation of mapReduce
Add map-reduce tests from MongoDB
Implement wrapper Code for MongoDB compatibility
Add output to collection for mapReduce
Fix problem with map and reduce wrapped with Code
Don't check server version in tests
Fix problem with dropping output collection
Catch errors in map and reduce functions
Rewrite mapReduce using safe
Implement group method (excepting case of nested keys)
Now all map-reduce tests are running
Fix mapReduce in case of single value for a key
Fix a bug in sorting

When there was no indexes in query, results were sorted by _id instead
of requested sort field.
Improve sorting on index field (SKI-108)

Get better performance when searching by one index, sorting by
another one and skip or limit specified.
Add test for sorting

Something like this should be integrated into basic-test.js
Catch syntax errors in map/reduce/finalize
Call reduce when some amount of values collected
Convert vows tests to mocha