HtREST v0.1.8

Changelog:

• Added support for Python 3.8.
• Bumped htheatpump from 1.2.3 to 1.1.4.
• Some minor cleanup and improvements.
• Changed default port of the HtREST application to 8777.
• Resource /api/v1/param and /api/v1/fastquery are now supports the possibility to request
  for a specific subset of parameters.
• Resource /api/v1/fastquery now also supports the possibility to treat boolean values as
  integers (arg --bool-as-int).
• Changed log statements to the form with the preferred and well-known %s (and %d, %f, etc.)
  string formatting indicators (due to performance reasons).