v0.4.0

• (!!) Queries now return a ResultSet object instead of a Dart list. Use ResultSet.allResults to get the previous behaviour.
• (!!) Renamed Document jsonProperties setter/getter to json
• (+) Document constructor's data accepts FLValue, a json string or json-encodable object as input
• (+) Documents now can hold a reference to the database and have save, delete, expiration methods
• (+) FLArray has two new constructors fromList and fromJson
• (+) FLDict has two new constructors fromMap and fromJson
• (+) FLArray and FLDict support keypath accessor similar to FLValue as FLArray() and FLDict(). Normal key access using [] is unchanged.
• (+) Implemented CBLLog class to manage messages that Couchbase Lite logs at runtime. Ability to control the domain and level of messages logged to either the console, file or a callback registered by the application.
• Fix mutable document's nested properties not being mutable
• Clean up listeners and other C callbacks implementation
• Fix database and document listeners on Android
• Fix blob getContent not returning the correct value
• Added tests for Document, Blob and the Fleece classes
• Lots of fixes and improvements in code structure and documentation