v1.3.0

Adaptation to changes in ReadTheDocs and minor bug fixes.

Notable changes

• Use ReadTheDocs API instead of scraping html. by @anjos in #12
• Use the correct click documentation location. by @anjos in #12
• Correctly parse pip's requirements.txt (ignore comments). by @Yannick-Dayer in #12

Full Changelog: v1.2.2...v1.3.0