Bugfix release

Implementation Changes

• Look for field 'detail' in error message. (#739)
• Exclude 308s from httplib2 redirect codes list (#813)

Documentation

• Remove oauth2client from docs (#738)

• Fix typo. (#745)

• Remove compatibility badges. (#746)

• Fix TypeError: search_analytics_api_sample.py #732 (#742)

• Correct response access (#750)

• Fix link to API explorer (#760)

• Fix argument typo in oauth2 code example (#763)

• Recommend install with virtualenv (#768)

• Fix capitalization in docs/README.md (#770)

• Remove compatibility badges (#796)

• Remove mentions of pycrypto (#799)

• Fix typo in model.py

• Add note about Google Ads llibrary (#814)

Internal / Testing Changes

• Blacken (#772)
• Move kokoro configs (#832)