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

Change blockchain version to 0.18.3

Change blockchain version to 0.18.2

Merge pull request GolosChain#795 from GolosChain/golos-v0.18.1

Golos v0.18.1

Update README with links to the build instruction.