1.5.4 (2013-02-04)
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 - refactor non-invoiced tickets validation [amleczko]


1.5.3 (2013-01-30)
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 - move to github [amleczko]
 - added buttons to switch between reports keeping the same parameters [massimoazzolini]
 - tickets of invoiced customerrequest cannot be charged of hours [massimoazzolini]
 - add karma integrations [amleczko]
