Add [XmlEdit][1] plugin for automated XML tagging.

There's [another popular XML vim plugin][3] based on [the original
xml.vim][2], but it doesn't seem to be as well maintained as this one.
(I may still go back and switch later.)

[1]: https://github.com/sukima/xmledit
[2]: http://www.vim.org/scripts/script.php?script_id=301
[3]: https://github.com/othree/xml.vim
Add [EasyMotion][1] to rapidly navigate files.

[1]: https://github.com/vim-scripts/EasyMotion
Update version of xmledit.
Add Scala support to vim.

These plugins are [available in GitHub][2], but they really just
mirror the functionality from the [Scala vim settings from the master
repository][1].

[1]: https://github.com/scala/scala-dist/tree/master/tool-support/src/vim
[2]: https://github.com/derekwyatt/vim-scala