Minor changes

Signed-off-by: Inti Pedroso <intipedroso@gmail.com>
Merge branch 'feature/get_number_of_seq_by_taxon' of github.com:inti/Compara-Phylostratigraphy into feature/get_number_of_seq_by_taxon
Merge branch 'feature/test_python_dev' of github.com:inti/Comparative-Phylostratigraphy into feature/get_number_of_seq_by_taxon
Merge branch 'feature/test_python_dev' of github.com:inti/Comparative-Phylostratigraphy into feature/get_number_of_seq_by_taxon
minor changes