Update CHANGELOG.md
Merge pull request #63 from ghiculescu/master

Add observed holiday rules for Australia
Merge pull request #62 from popox/patch-1

Update CHANGELOG.md
Update thank yous
Add Slovenian holidays
Updated for new king. See also http://en.wikipedia.org/wiki/Public_holidays_in_the_Netherlands
Merge pull request #67 from johankok/master

Updated for new king in The Netherlands.
Update thank yous
Merge pull request #66 from bbalon/master

Add Slovenian holidays
Update thank yous
Merge pull request #69 from ghiculescu/master

Australia: no easter saturday in Tasmania or Westetrn Australia
add g20 day (Brisbane) and show day (Cairns)