Lift-formality 1.1.0: Spit-shine and Lift 3

Lift-formality has supported the Lift 3.0 series in snapshots for
a little while, but it wasn't public. We now have builds for 1.1.0 for
both Lift 3.0 and 3.1 series, and will be putting out a dot release
and build for the 3.2 series when that goes final soon.

Scala support is still at 2.11, but we should be putting out a dot
release soon to also add cross-compile for 2.12 (some test
dependencies need to be bumped and we wanted 1.1.0 out the
door first).

So what's changed?

• #11 made it so fields that aren't sent to the server don't manifest
  as Failures by default; instead, you have to actively make them
  Failure in a boxed validation, otherwise they show up as Empty.
  This was a bug we ran into in our use of lift-formality at @elemica.
• #23 allows textarea elements to have their default value set
  correctly. The API is unchanged, it just works now.
• #23 also allows for empty default values for fields whose final type
  is not a String. You do this by providing an Empty when you want
  no default value for these fields.
• Finally, #23 fixed defaults for checkboxes, which were not being
  passed through correctly into the markup.
• #19 added the ability to call fieldGroup(".css-selector") to scope
  a field group to a given selector. Before, fieldGroup only existed
  with no parameters. The underlying code supported scoping, you
  just had to call the FieldGroup class constructor directly.

Enjoy the release!