Merge branch 'develop'

# Conflicts:
#	climada/_version.py
#	setup.py

fix setup for packaging

tutorial api client: fix hierachical level definition

Merge branch 'develop'

# Conflicts:
#	doc/guide/Guide_Installation.ipynb

set version number

set version number straight

version number 2.2.0

Release 2.1.1

set version number 2.1.0