Changelog

0.5.0

Set canonical URL to metatags (unless set) before printing

0.4.0

Remove reliance on phoenix_html to build tags
Relax phoenix_html versions

0.3.2

Update phoenix_html to ~> 3.1

0.3.1

Require elixir 1.10
Add support for common <link> tags: next, canonical, alternate and apple-touch-icon-precomposed
Add Metatags.put/4 to enable extra attributes to be set on the metatags. One example would be:
```
Metatags.put(conn, "alternate", "https://my-url.se", hreflang: "sv_SE")
```

0.3.0

Move configuration of default values to the plug definition
Extract the plug to Metatags.Plug

Migrate: First, change the plug from Metatags to Metatags.Plug. After that you can move whatever you have in your configuration and put behind plug Metatags.Plug in your router. If you require environment specific defaults, use Application.get_env/3.

0.2.2

Add [String.t()] to Metatags.put/3 type spec
Replace ESpec with ExUnit in internal test suite