af6dc1db02 internals: Bump version to 0.3.0 (Tobin C. Harding)
Pull request description:
In preparation for release add a changelog and bump the version number.
Please note, the changelog is pretty terse.
ACKs for top commit:
apoelstra:
ACK af6dc1db02
sanket1729:
ACK af6dc1db02
Tree-SHA512: b70d4b9de7de90aba3cbff90dd7f25c5ac801d020dbdfe3e64af4c079347cba726aa783a94fc777e7bf177db8402b54948c2dfd4a766d90c1a7a7a6bdfd36136