v0.1.0

This is a large release:

• Switch to Circe from upickle
  Should have minimum impact on the code you write. This aligns langoustine with jsonrpclib that uses jsoniter + circe to handle all JSON.

• Scala Native 0.5 release
  Langoustine is now available for SN 0.5

• Opt is gone
  We used Opt type alias to work around some quirks in upickle's serialisation. With changes to codecs, we just use Option everywhere. This will be the biggest syntactic breaking change, but it's a simple search-and-replace fix.

• Propagate documentation on type aliases
  This was missed and has now been amended. Aliases are still not very pleasant to work with, but at least there are doc strings

• (internal) All generated code is broken into individual files
  Dealing with gigantic structures.scala has been torturous

• (internal) Explicit codecs
  Code generation changed to write out codecs manually – easier to inspect than implicit ones, faster to compile

Overall the release will have minor syntactic impact on your servers, but we are getting closer to an API that can be stabilised.

What's Changed

• Prepare Scala Native 0.5 release by @keynmol in #213
• Fix tests and union encoder for vectors by @keynmol in #214

Full Changelog: v0.0.25...v0.1.0