v0.2 Bug Fix Release

Fix default configuration:

• PJON config now correctly initialized to PJON default values
• User now has an interface to configure the Bus before constructing
• Fix default busId

Initial Beta release

This release marks the state of PjonHL at the time of open-sourcing.

Some notes on stability of this release:

• The release is mostly covered by unit-tests but did not undergo real-world testing.
• The general concepts of PjonHL (using a pre-open-source and pre-release version) were tested in a real world application using ThroughSerial PJON strategy
• APIs may still change (Especially the return type of the receive() function, as there is still some functionality missing)