dart_cose 1.0.3

Partial Dart implementation of COSE, RFC8152

[1.0.0] - Initial functionality to decode and verify a COSE signature

• Initial functionality to decode and verify a COSE signature

[1.0.1] - Select secondary algorithm based on key type

• Support RSA aside from EC keys.

[1.0.2] - Return payload

• Return payload

[1.0.3] = Finetuning KID validation, also support algo -37

• Further implementation of missing features for DGC validation