Version bump, starting 0.7.x line
Removed deprecated methods marked for removal in 0.7.0.
New module: extras
Documented .extras.*
vdom.prefix_<^ (#41)
Add Router. (#29)
Merge branch 'master' into v0.7.x

Conflicts:
	HISTORY.md
	project/Build.scala
Removed {ref,Key}Attr aliases from prefixed
Embedded and specialised Scalatags
HISTORY.md: Tweak. Add migration script.
Updated PrefixedVdomTest
EmptyTag is now a val instead of object.

I do *not* want to see this kind of crap again.
[error]  found   : japgolly.scalajs.react.vdom.ReactTag
[error]  required: japgolly.scalajs.react.vdom.EmptyTag.type
Added way more functionality to Router
More Router tests
Router can now remove trailing slashses by redirection
Router registrations no longer magical
Added router.Page.interceptRender
Tweak RouterTest
Trivial refactor
Attributes, styles, tags support being wrapped in Option or js.UndefOr.