Bump version to 18.0.0 for release

Author: rtfeldman

CHANGELOG.md

@@ -1,6 +1,7 @@
 ## Releases
 | Version | Notes |
 | ------- | ----- |
+| [18.0.0](https://github.com/rtfeldman/elm-css/tree/18.0.0) | Add `line-height: normal` ([#578](https://github.com/rtfeldman/elm-css/pull/578)) and `keyedLazy` ([#584](https://github.com/rtfeldman/elm-css/pull/584))
 | [17.1.1](https://github.com/rtfeldman/elm-css/tree/17.1.1) | Allow multiple `css` attributes on node ([#566](https://github.com/rtfeldman/elm-css/pull/566))
 | [17.1.0](https://github.com/rtfeldman/elm-css/tree/17.1.0) | Support nonces ([#569](https://github.com/rtfeldman/elm-css/pull/569))
 | [17.0.5](https://github.com/rtfeldman/elm-css/tree/17.0.5) | Fix SVG styling bug ([#565](https://github.com/rtfeldman/elm-css/pull/565))

elm.json

@@ -3,7 +3,7 @@
     "name": "rtfeldman/elm-css",
     "summary": "Typed CSS in Elm.",
     "license": "BSD-3-Clause",
-    "version": "17.1.1",
+    "version": "18.0.0",
     "exposed-modules": {
         "Elements": [
             "Html.Styled",