revert multiprocessing in Docker

freeze instantly

Merge pull request golos-blockchain#1 from golos-classic/golos-classi…

…c-transit-v0.21.0

Golos classic transit v0.21.0

Merge pull request GolosChain#1079 from GolosChain/golos-v0.20.0

Golos v0.20.0

Merge pull request GolosChain#1042 from GolosChain/golos-v0.19.1

Golos v0.19.1

Change default curation percent to 25%.

Fix arguments for broadcast_transaction_synchronous and broadcast_tra…

…nsaction_with_callback.

Merge pull request GolosChain#950 from GolosChain/golos-v0.18.5

Golos v0.18.5

Merge pull request GolosChain#937 from GolosChain/golos-v0.18.4

Golos v0.18.4

Merge pull request GolosChain#922 from GolosChain/golos-v0.18.4

Golos v0.18.4