v0.21.0 - SmartMatch, psycopg2-binary installation fix, and lots of small bugfixes

New Connectors

• TargetSmart SmartMatch connector by @benstroud in #674

Enhancements

• More flexible importing in parsons/init.py by @cmc333333 in #702
• Sendmail connector is now an abstract base class by @AndrewRook in #717
• Convert None to "" in convert_columns_to_str by @Jason94 in #728
• Add upsert_person method to ActionNetwork by @shaunagm in #734
• Allow Subfolders for Temp S3 Bucket in Redshift Operations by @SorenSpicknall in #738
• Always use UTF-8 encoding writing to S3 via the Redshift connector by @Jason94 in #732

Fixes/Improvements

• Remove leading and trailing whitespace from table and schema name in Redshift utility method table_exists_with_connection() by @neverett in #715
• Fix Redshift column alteration bug by @SorenSpicknall in #709
• Fix small bug with postal addresses in Action Network add_person method by @shaunagm in #716
• Bugfix for Redshift upsert alter_varchar_columns cascade issue by @SorenSpicknall in #720
• Fixes for Sendmail tests linting by @SorenSpicknall in #721
• Don't auto-grab AWS session token if it's not passed in by @sjwmoveon in #740
• Update Mobilize connector by @Jason94 in #733
• Update psycopg2-binary from 2.8.5 to 2.9.3 by @shaunagm in #731

Documentation

• Update version number for 0.21.0 release by @SorenSpicknall in #743

New Contributors

• @benstroud made their first contribution in #674
• @sjwmoveon made their first contribution in #740

Full Changelog: v0.20.0...v0.21.0