collection of smaller fixes for logger, inout params and mime-types

[cehbrecht]

Overview

collection of smaller fixes:

• init of logger
• added mime-types for text and netcdf
• added as_reference argument to ComplexOutput
• fixed setting of default value
• fixed parsing of optional inputs

Related Issue / Discussion

see gitter chat ...

Additional Information

Contribution Agreement

(as per https://github.com/geopython/pywps/blob/master/CONTRIBUTING.rst#contributions-and-licensing)

• I'd like to contribute [feature X|bugfix Y|docs|something else] to PyWPS. I confirm that my contributions to PyWPS will be compatible with the PyWPS license guidelines at the time of contribution.
• I have already previously agreed to the PyWPS Contributions and Licensing Guidelines

[coveralls]

Changes Unknown when pulling 6846796 on bird-house:fix-combined into * on geopython:master*.

[coveralls]

Changes Unknown when pulling 6846796 on bird-house:fix-combined into * on geopython:master*.

[jachym]

Thank you @cehbrecht