Merge branch 'develop-38-horizontal-interpolation-conservative' into dev_37-test-and-clean-tutorials-and-tests

#40 Spatial join intersection parallel error and other fixes

Closes #40

See merge request es/NES!56

# Conflicts:
#	nes/methods/horizontal_interpolation.py
#	nes/nc_projections/default_nes.py
#	tests/test_bash_mn4.cmd
#	tests/test_bash_nord3v2.cmd

#20 Cell area

See merge request es/NES!55

Fixed error while getting the reading axis limits

See merge request es/NES!54

Master

See merge request es/NES!53

#3 Shapefile

See merge request es/NES!52

# Conflicts:
#	tests/3-test_spatial_join_nord3v2.bash

#2 Update coordinates bounds

See merge request es/NES!50