Remove unused method.
Tweak to help with unit testing.
Start unit tests for .io.serial bundle.
Add more methods to SerialConnection API to support reading fixed-length
marked messages and writing messages.
Add more tests.
Fix dealing with timeout.
Add test for writing with timeout.
Add timeout test for reading marked fixed-length message.
Only read once from InputStream within loop testing to abort.
Fix comments.
Export .test package so other bundles can make use of test serial port
support.
Allow IOException in getDeviceInfo.
Update LATA bundle to use new SerialNetwork API.