Custom protocol messages, keyboard and renderer improvements

• Ability to change the frequency of the renderer at any time, takes place almost immediately - using renderer.setUpdatesPerSecond
• Custom protocol messages can now be added for both sending and receiving allowing you to add a custom message from the Java/TS API through to the device. The performance of ID lookup has been improved.
• Major keyboard improvements, there is now a plugin that autogenerates keyboard code, and all known cases edit better.