v1.7.1

• Adds Google Colab notebook that can run pharokka and phold.
• The notebook is https://colab.research.google.com/github/gbouras13/pharokka/blob/master/run_pharokka_and_phold.ipynb
• Fixes #334 issue with contig ids if they were in scientific notation or lead with 0s.
• Fixes issues with pharokka_proteins.py not outputting PHROG annotations.