0.20.1 (2021-09-01)

CI changes

• Install cargo via rustup in alpine image #316

Wrapper changes

• Download messages via a connection handle as u32 #331
• Add vcx_v2_messages_download method to Java wrapper #324

• Use correct prefix on created @type on aries messages. #341
• Remove unmaintained python wrapper #335
• Add architecture diagram, update docs #334
• Move alice & faber "agents" to aries-vcx crate #333
• Rename branch 'master' to 'main' #332
• Ci/fix test execution #328
• update roadmap and main readme #327
• Add pgsql integration test #326
• Migrate to the new docker registry #321
• Separate aries module into a crate #320
• Move devsetup agent and tests to api_lib #315