This changelog references the relevant changes (bug and security fixes) done in 1.4.x patch versions.
- #244: Use short array syntax
- #263: Fix wrong parameter in count method
- #264: Drop support for PHP 5.5
- #273: Remove unused use statements
- #274: Loggable GridFS collection
- #275: Deprecate update() and multiple() methods in query builder
- #246: Open up aggregation builder API for use in ODM
- #278: Run travis tests against MongoDB 3.2 and 2.6
- #276: Support passing driver options to connection class
- #277: Pass query options when running count command
- #280: Use argument unpacking insteda of call_user_func
- #279: Allow passing multiple arguments to add* methods