Add support for Horizontal Rules (#25)

* Add hr tag to list of block tags

* Build Divider widgets for hr elements

* Use BoxDecoration to draw a horizontal rule

* Update changelog

* Add test

* Add test cases

* Revert "Add test cases"

This reverts commit d20cd6f4974ab6d04436ca21f93f168f307c2fd5.
4 files changed
tree: c2b2471a5fe53b3d6bf01a02a91bd24f3a005090
  1. packages/