v0.16.0

What's Changed

• ast: add support for parsing solidity assembly by @Raiden1411 in #142
• ast: add support for a solidity format writer (part 1) by @Raiden1411 in #143
• ast: extend support for the solidity formatter by @Raiden1411 in #145

Full Changelog: v0.15.7...v0.16.0