fix issue which prevents Boxing Day from being shifted if Christmas Day falls on a week day but Boxing day falls on the weekend
Merge pull request #93 from jaraco/direct-return

When a test yields a boolean value, return that value directly.
Merge pull request #95 from declantraynor/bugfix-boxing-day-shift

Boxing Day is not being shifted when it falls on a Saturday
Changelog for 0.3 updated
Add support for an observe_after property on a Holiday.
Update UnitedKingdom to support indicated and observed holidays.
Update changelog
Merge with upstream
Added tag 1.1 for changeset 34730031b5d0