pushing dev2.6

create dev2.5 tag

creating new dev2.4 tag for testing

changing dev2.3 to this commit

Development release for stagenet

Merge pull request EOSIO#5622 from EOSIO/release/1.2.x

Release 1.2.5

Merge pull request EOSIO#5550 from EOSIO/release/1.2.x

Version 1.2.4

Merge pull request EOSIO#5466 from EOSIO/release/1.2.x

Version 1.2.3

Merge pull request EOSIO#5382 from EOSIO/release/1.2.x

Version 1.2.2