added Play support

Merge pull request #14 from pimpeters/plays

Added 'Play' support

added Thing#getWeightAverage

Merge pull request #10 from alberto-bottarini/patch-1

add getWeightAverage

v1.1.3: added Client#getHotItems, getThings, getCollection

added Client#getHotItems, getThings, getCollection
added Type constants instead of Client#TYPE_* contants

v1.1.2

added Client#search()
added tests

v1.1.1: added:

added Thing#getType()
added Thing#isBoardgameExpansion()

v1.1.0

• added Thing#getLanguageDependenceLevel()
• added Thing#getBoardgameBasegame()

1.0.0

First public release