Added custom id generator custom mapping type support.
Implemented association methods in ClassMetadata.
Try a fix for #435
Make Yaml component an optional dependency
Tweak tags/authors in composer.json
Depend on stable doctrine/mongodb release 1.0.x
Merge pull request #461 from Spea/master

Implemented two interface methods in the ClassMetadata class
Allow documents with unset collections to be merged (fixes #467)
Ensure hash types are inserted as objects, not arrays (fixes #453)
Test against 1.3.2 branch of PHP driver
Merge pull request #472 from doctrine/bson-types

Always insert hash-mapped types as objects
Merge pull request #464 from doctrine/fix/435

Try a fix for #435
Merge pull request #448 from jgornick/issue/447

Update custom ID generator to allow a custom mapping type
Regression test for filtered geoNear query (closes: #452)
Test latest Mongo driver in Travis CI builds
Ensure alt embed/ref YAML syntax sets mapping keys (fixes #475)
Made discriminatorMap annotation unnecessary