update bitflags crate to latest version. This is in case we manage to implement To/From TLV for bitflags::Flags type (although I am unsure here ... I tried and I get errors because we have defined to/from TLV for slices and references)
define a macro bitflags_tlv that implements ToTLV/FromTLV for the given macro given an underlying data type that is expected
This builds on top of #143
Changes
bitflags_tlvthat implements ToTLV/FromTLV for the given macro given an underlying data type that is expected