Fix typos
Upgrade to biopython 1.63
Add Biopython Entrez/Medline tests
Remove unused DocTests
Fix PEP8
Add Bio MissingExternalDependencyError exception
Move Bio imports to Bio_Eutils
Add Bio python 3 compatibility tools
Use relative import
Replace Bio imports by Bio_Eutils
Add required test data
Update documentation (Tests & Install)
Ignore built eggs
Add Entrez DTDs to package data
Switch installation script to setuptools
Merge branch 'feature/setuptools' into develop
Bump version to 1.63
Merge branch 'release/1.63'