Added

Added support for GitLab SSH URLs on pack install and download actions. (improvement) #5050
Contributed by @asthLucas
Added st2-rbac-backend pip requirements for RBAC integration. (new feature) #5086
Contributed by @hnanchahal
Added notification support for err-stackstorm. (new feature) #5051
Added st2-auth-ldap pip requirements for LDAP auth integartion. (new feature) #5082
Contributed by @hnanchahal
Added --register-recreate-virtualenvs flag to st2ctl reload to recreate virtualenvs from scratch. (part of upgrade instructions) [#5167]
Contributed by @winem and @blag

Changed

Updated deprecation warning for python 2 pack installs, following python 2 support removal. #5099
Contributed by @amanda11
Improve the st2-self-check script to echo to stderr and exit if it isn't run with a
ST2_AUTH_TOKEN or ST2_API_KEY environment variable. (improvement) #5068
Added timeout parameter for packs.install action to help with long running installs that exceed the
default timeout of 600 sec which is defined by the python_script action runner (improvement) #5084

Contributed by @hnanchahal
Upgraded cryptography version to 3.2 to avoid CVE-2020-25659 (security) #5095
Converted most CI jobs from Travis to GitHub Actions (all except Integration tests).

Contributed by @nmaludy, @winem, and @blag
Updated cryptography dependency to version 3.3.2 to avoid CVE-2020-36242 (security) #5151

Pin chardet version as newest version was incompatible with pinned requests version #5101
Contributed by @amanda11
Fixed issue were st2tests was not getting installed using pip because no version was specified.
Contributed by @anirudhbagri
Added monkey patch fix to st2stream to enable it to work with mongodb via SSL. (bug fix) #5078 #5091
Fix nginx buffering long polling stream to client. Instead of waiting for closed connection
wait for final event to be sent to client. (bug fix) #4842 #5042

Contributed by @guzzijones
StackStorm now explicitly decodes pack files as utf-8 instead of implicitly as ascii (bug fix)
#5106, #5107
Fix incorrect array parameter value casting when executing action via chatops or using
POST /aliasexecution/match_and_execute API endpoint. The code would incorrectly assume the
value is always a string, but that may not be the cast - they value could already be a list and
in this case we don't want any casting to be performed. (bug fix) #5141

Contributed by @Kami.
Fix @parameter_name=/path/to/file/foo.json notation in the st2 run command which didn't
work correctly because it didn't convert read bytes to string / unicode type. (bug fix) #5140

Contributed by @Kami.
Fix broken st2 action-alias execute command and make sure it works
correctly. (bug fix) #5138

Contributed by @Kami.

Removed --python3 pack install option #5100
Contributed by @amanda11
Removed submit-debug-info tool and the st2debug component #5103
Removed check-licence script (cleanup) #5092

Contributed by @kroustou
Updated Makefile and CI to use Python 3 only, removing Python 2 (cleanup) #5090

Contributed by @blag
Remove st2resultstracker from st2ctl, the development environment and the st2actions setup.py (cleanup) #5108

Contributed by @winem