Ignore other vim swap files
Remove RUBY_1_8_7 conditionals from code #371
Remove deprecated Ast::Visitor class
Goodnight sweet StepMother.

May your awkward metaphor never clutter our conciousness again.

Closes #403
Remove support for i18n nested step methods.

This means you must now use the #step method when delegating
to a nested step. Previously you could do this:

~~~
Given /a big fat step/ do
  Given "baby step 1"
  Given "baby step 2"
end
~~~

Now you have to do this instead:

~~~
Given /a big fat step/ do
  step "baby step 1"
  step "baby step 2"
end
~~~

Note that you can also use the #steps method:

~~~
Given /a big fat step/ do
  steps %{
    Given baby step 1
    And baby step 2
  %}
end
~~~
Update History.md
Remove experimental js support.

Closes #391
Remove experimental Python support.

Closes #392
Update History