use the end of a possible time period of a phenomenon time in an observation response
Merge remote-tracking branch 'origin/52n/2.0.0-alpha.3.2' into 2.0.0-alpha.3.2
parameter 'procedure' in GetFeatureOfInterest is optional
Merge pull request #31 from ridoo/2.0.0-alpha.3.2

2.0.0 alpha.3.2
Merge remote-tracking branch '52n/2.0.0-alpha.3.2' into 2.0.0-alpha.3.2