5b3e4ab95b base58ck: Bump version to 0.2.0 (Tobin C. Harding)
Pull request description:
In preparation for release add a changelog entry, bump the version, and update the lock files.
ACKs for top commit:
storopoli:
ACK 5b3e4ab95b
apoelstra:
ACK 5b3e4ab95b015b5bba5b73db2052cbb63a901466; successfully ran local tests
Tree-SHA512: 8347b0540ccdfc29f4a03f0a3554142b4fbd39b519512dcc886c28cae75666201aa8a7e4a07999e70c0348e59f02c4c0d67541a20102153b36150f5e4748a89e