Merge pull request tendermint#366 from tendermint/release-0.8.0

Release 0.8.0

Merge pull request tendermint#323 from tendermint/release-0.7.4

Release 0.7.4: feature flag: pex reactor

Merge pull request tendermint#307 from tendermint/release-0.7.3

Release 0.7.3

Merge pull request tendermint#272 from tendermint/hotfix-1.7.2

Hotfix 1.7.2

Merge pull request tendermint#271 from tendermint/release-0.7.1

Release 0.7.1

Merge pull request tendermint#242 from tendermint/release-0.7.0

Release 0.7.0

Fixed docker file

remove secp256k1; Make cleanup