Adding a data.isNotEmpty check to avoid null errors in some managers
Fixing Get Fitbit Account Data regarding the URL, fromJson (adding also features (exerciseGoal))
Fixing the DateTime parsing of the date contained in the Json, especially for the intraday calls with intradayDetailLevel set to IntradayDetailLevel.ONE_SECOND, cause it seems not able to manage seconds
data.isNotEmptycheck to avoidnullerrors in some managersGet Fitbit Account Dataregarding theURL,fromJson(adding alsofeatures (exerciseGoal))DateTime parsingof the date contained in the Json, especially for theintradaycalls withintradayDetailLevelset toIntradayDetailLevel.ONE_SECOND, cause it seems not able to manage seconds