Changelog for hvega-0.2.1.0

For the latest version of this document, please see [https://github.com/DougBurke/hvega/blob/master/hvega/CHANGELOG.md](https://github.com/DougBurke/hvega/blob/master/hvega/CHANGELOG.md).

0.2.1.0

Added the toHtml and toHtmlFile functions which create the necessary HTML to view the Vega-Lite visualization using Vega Embed (this is similar to how ihaskell-hvega works).

This functionality was provided by Gregory Schwartz; apologies for taking so long to get it released.

0.2.0.0

The constructors for the LegendOrientation type have been renamed (by adding the prefix LO) which avoids the name clash with Left and Right seen in earlier releases. This is a breaking API change.

Clarify how to use the library in the main hvega module.

Thanks to contributions from Nicolas Mattia (nmattia) and Marco Zocca (ocramz).

0.1.0.3

The only change is to the cabal file, where cabal-version: >=1.18 has been changed to cabal-version: 1.18.

0.1.0.2

Updated the upper bounds of aeson to really allow v1.4. This was not released on Hackage.

0.1.0.1

Updated the upper bounds of aeson from v1.2 to v1.4.

The cabal package now includes stack.yaml and default.nix (although the latter is not guaranteed to be correct), as well as a change log and an extra image.

0.1.0.0

This is the initial version of hvega, which is based on version 2.2.1 of the Elm Vega library.