Resolve "Error management improvement"

Closes #90

See merge request !94

Revert "Merge branch 'int_stage_roman' into 'develop'"

See merge request !93

# Conflicts:
#   python/s2snow/snow_product.py
#   test/CMakeLists.txt

Resolve "SnowProduct: handle copernicus format"

Closes #92

See merge request !91

Resolve "Mention Tristan Klempka  in Readme"

Closes #91

See merge request !92

snow_product should be able to parse copernicus retreived archives

Closes #92

See merge request !88

Resolve "detected metadata file is lost"

See merge request !89

Resolve "Product counter must be a string"

See merge request !87

Resolve "detected metadata file is lost"

See merge request !86

Resolve "Blue band read"

See merge request !85

Merge develop

See merge request !84

Resolve "Synthesis on zipped products does not work"

Closes #86

See merge request !83

Resolve "Synthesis name is SNT + NOBS and SOD/SMOD have all the same name"

Closes #89

See merge request !82

Resolve "Logging error on synthesis"

Closes #88

See merge request !81

Resolve "Synthesis : tile_id is mandatory"

Closes #87

See merge request !80