Ensure state is saved and restored from EEPROM as expected.
Make constructors for turnouts private. Otherwise, a statically created turnout may be initialising itself before the underlying HAL device has been created. By requiring the create() call be used, there is more control over the timing of the turnout object's creation.
<s> command currently prints the current states for outputs and for sensors, but prints the full configuration of turnouts. This change makes the turnout output consistent, i.e. just <H id state> is output for each turnout. The <T> command still outputs the full turnout definition.
JMRI currently isn't aware of the newer types of turnout in DCC++EX, so when it receives the definitions of turnouts it barfs on them. It still knows a turnout exists, but isn't able to display its full configuration. For DCC Accessory turnouts, the configuration message has changed so that it includes the DCC string (to distinguish them from other types of turnout). To enable current and older versions of JMRI to continue working with DCC turnouts, CS now reports the old and new formats, i.e. <T id addr subaddr state> and <T id DCC addr subadd state>. It currently accepts the first one and ignores the second one, but in the fullness of time it might accept the second one too.
Ensure that the <H> message is sent on the serial USB (to JMRI) whenever the turnout is closed or thrown, even if the request didn't originate on the serial USB.
Turnout class split into a base class for common code and specific subclasses for Servo, DCC, VPIN and LCN turnouts.
Interface further narrowed to reduce direct access to member variables.
Turnout creation command handling has been moved into the DCCEXParser class.
Turnout function and parameter names changed to make the Throw and Close functionality explicit.
Turnout commands <T id C> (close) and <T id T> (throw) added.
On activation, Turnout code was saving entire EEPROM twice, even if EEPROM save was switched off with the <e> command. It's now been changed so that only the tStatus byte is updated, and only if the turnout has previously been saved into EEPROM.
In prep for Wifi siolution, all output functions changed to expect Print class instead of Stream... Can still pass Serial1 etc because Stream extends Print, but this allows for an output-only class extending Print to collect a response buffer for Wifi sending with AT commands.
