dapp: 0.22.0

Merge pull request #229 from dapphub/solc-0.5.9

solc 0.5.9

Merge pull request #224 from dapphub/fix-nonce

hevm: UnitTest.hs: fix nonce initialisation bug (fixes #222)

dapp: 0.20.0

Adds support for solc 0.5.8

Merge pull request #215 from dapphub/seth-0.8.2

seth: 0.8.2

Merge pull request #179 from dapphub/revert-mapfile

seth 0.8.1: revert SC2207

Merge pull request #175 from dapphub/shellcheck

dapp 0.18.0 + seth 0.8.0

Revert "seth: label deployed contract address"

This reverts commit 7af3d02.

The output of `dapp create` is fed into other scripts, therefore we need
to keep the address as the only output.

Merge pull request #175 from dapphub/shellcheck

dapp 0.18.0 + seth 0.8.0

Merge pull request #157 from dapphub/solc_0.5.6

solc 0.5.6