Added parser test data and added Matid package.

.gitignore

requirements-dep.txt

tests/data/parsers/bigdft/log-H-ixcLDA.out

tests/data/parsers/bigdft/n2_output.out

tests/data/parsers/cpmd/geo_output.out

tests/data/parsers/cpmd/md_output.out

tests/data/parsers/cpmd/sg_output.out

tests/data/parsers/crystal/mgo.d12

tests/data/parsers/crystal/mgo.out

tests/data/parsers/crystal/si.out

tests/data/parsers/nwchem/geo_output.out

tests/data/parsers/nwchem/md_output.out

tests/data/parsers/nwchem/sp_output.out

tests/test_parsing.py