Renamed finalize() to done()
Added the catch() method
Added the finally() method
Merge pull request #18 from clintongormley/master

Added tests and docs for exception handling
Merge pull request #19 from clintongormley/more_like_q

Be more like Q
Localized exceptions still failing in perl < 5.14 if the
pureperl deferred backend in use.  The choice here is
between not localizing at all and having the user choose
a Deferred backend. I think this is the better choice
so have skipped the PP exception tests on < 5.14