v1.0

• Added PHP 5.5 support (#4);
• Added Juggler:deleteImposterIfExists() (#6);
• Added IsResponse:getHeader(), IsResponse:setHeader() (#10);
• Added possibility to pass callback to Juggler:findRequests() (#8);
• Added exceptions in case if filesystem-related operations (reading contract from file, saving contract to file) fail (#9);
• Fixed bug with improperly translated 'replayable' and 'removeProxies' params building query string (#3);
• Fixed bug when exception was thrown if desired IsResponse header value was not of type string (#5);
• Juggler:deleteImposter() now returns contract instead of void (#1);
• Juggler:replaceImposter() now returns port just like Juggler:postImposter() (#7);