VITA 49.0:2015

Updates were made to clarify terminology related to timestamps, fix minor rule/observation conflicts in section 7.1.5, and to correct examples in Appendix D. A semantic change was made to the rules for Class Identifiers to permit a 'de facto' practice already in common use. An optional 'Pad Bit Count' field was introduced to allow the number of pad bits at the end of the Data Packet to be reported and optional support was added for IEEE 754 half-precision floating-point values.