Method request : isDownloading , isStoped

[ayalma]

hi and thank for this awesome library. can you add some extra method to DlManager

dlISDownloading(String Url) // that method must return true if download is in progress now and false if is not 
and dlIsStoped(String Url) //  that method must return true if download is stoped   and false if it not exist in db 

thank you in advance.