version: Update version strings following 2.1 release.
version: Update version strings following 2.1 release.

synicalsyntax/zulip,rht/zulip,showell/zulip,zulip/zulip,brainwane/zulip,andersk/zulip,punchagan/zulip,kou/zulip,brainwane/zulip,timabbott/zulip,eeshangarg/zulip,brainwane/zulip,punchagan/zulip,timabbott/zulip,brainwane/zulip,zulip/zulip,rht/zulip,eeshangarg/zulip,andersk/zulip,hackerkid/zulip,timabbott/zulip,showell/zulip,andersk/zulip,showell/zulip,shubhamdhama/zulip,hackerkid/zulip,brainwane/zulip,timabbott/zulip,eeshangarg/zulip,eeshangarg/zulip,timabbott/zulip,eeshangarg/zulip,showell/zulip,shubhamdhama/zulip,shubhamdhama/zulip,hackerkid/zulip,kou/zulip,andersk/zulip,kou/zulip,synicalsyntax/zulip,synicalsyntax/zulip,showell/zulip,punchagan/zulip,zulip/zulip,zulip/zulip,timabbott/zulip,brainwane/zulip,hackerkid/zulip,shubhamdhama/zulip,kou/zulip,eeshangarg/zulip,rht/zulip,andersk/zulip,kou/zulip,synicalsyntax/zulip,showell/zulip,rht/zulip,punchagan/zulip,synicalsyntax/zulip,showell/zulip,brainwane/zulip,kou/zulip,synicalsyntax/zulip,hackerkid/zulip,andersk/zulip,synicalsyntax/zulip,punchagan/zulip,andersk/zulip,zulip/zulip,zulip/zulip,punchagan/zulip,shubhamdhama/zulip,rht/zulip,zulip/zulip,hackerkid/zulip,shubhamdhama/zulip,eeshangarg/zulip,kou/zulip,hackerkid/zulip,shubhamdhama/zulip,punchagan/zulip,timabbott/zulip,rht/zulip,rht/zulip