Control: forwarded -1 https://bitbucket.org/wooster/biplist/issues/8
Since the plist format stores the length of the integer, storing a long should always return a long: <integer> 0001 nnnn # of bytes is 2^nnnn, big-endian bytes https://en.wikipedia.org/wiki/Property_list#Mac_OS_X On python3 this does not matter, since there is no long type, only int.
