Vrpc

Fixed

- Exchanged md4 with md5 hashing fixing missing browser support

Changed

- Adapter and Proxy can now use username and password for MQTT authentication
- ClientIDs are not longer random generated but explicitly set
- Added __static__ keyword to wire protocol as placeholder for the instance
position in case of static function
- Updated README to reflect latest documentation

Fixed

- Bug that led to ambiguity given different agents serving same class names

Changed

- module.exports in index.js to also support VrpcAdapter

Changed

- module.exports in index.js to also support VrpcRemote

Added

- VrpcAgent for node.js
- VrpcRemote for node.js
- Corresponding tests involving MQTT
- Corresponding dependencies

Changed

- Rewrote `VrpcLocal.js` using classes
- Adapted tests to instantiate VrpcLocal with `new` keyword
- Removed VRPC_COMPILE_AS_ADDON and introduced VRPC_WITH_DL
- Removed previously deprecated `cpp` symbolic link
- Some details of the wire-protocol
- Renamed the argument identifiers from `a1`, `a2`... to `_1`, `_2`...
- Renamed `function` to `method`
- Renamed VrpcFactory to VrpcAdapter
- Renamed vrpc_local.py to VrpcLocal.py

Fixed

- Re-registration problem for emitter based callbacks resulting in multiplied callbacks