Bug fix: Moved calendar utils class to correct package.
Added onMessage interface method and added time frame paramter for
getNextEvents method.
Added getEvents method. Method renaming for clarity.
Added IClient instance handling.
Merge branch 'master' of https://github.com/juxeii/JForex.git
Class renamed.
Again renamed, because calendar messages shoulb be handled separatedly.
Refactorings to CalendartUtils.