v0.6.0

• the API will not throw NullPointerExceptions

• added another entry for TeamRanking with moreDetailed parameter

• parsing and other api tasks are now done on a different thread 

  • A thread pool will handle resource intensive tasks such as parsing the dom on a background thread. the callback function that's provided by the developer when making the method calls will still be run on the UI thread.

• data model classes are now serializable

• some upgrades on gradle and dependencies

• made ThreadPoolProvider a singleton

• bug fix on integer parse in LeagueScheduleFetch

  • bug fix on league schedule fetch. remove non numeric characters before parsing team score int value