Scte

Fixed issue where padding exists in the scte data and caused failures to parse Splice Descriptors. Now, SpliceEvent breaks from the parsing loop if the minimum number of bytes required for a SpliceDescriptor is not present

Fixed JSON Serializing of SpliceEvent, SpliceInsert was giving issues

JSON serialized SpliceEvent objects, better segmentation_upid representation

Added SpliceEvent serialization, corrected cr/lf problems.

Fixed import bugs