devine-dl/pywidevine v1.5.1 on GitHub

Support for big-int Key IDs in PSSH. All integer values are converted to a UUID and are loaded big-endian.
Import path shortcuts in the __init__.py package constructor to all the user classes.
- Now you can do e.g., from pywidevine import PSSH instead of from pywidevine.pssh import PSSH.
- You can still do it the full direct way if you want.
Parsing check to the raw DrmCertificate in Cdm.set_service_certificate().

Service Certificates are now stored in the session as a SignedDrmCertificate.
- This is to keep the signature with the Certificate, without wrapping it in a SignedMessage unnecessarily.
Reduced the maximum concurrent Cdm sessions from 50 to 16 as it seems to be a more common limit on more up-to-date
devices and versions of OEMCrypto. This also helps encourage people to close their sessions when they are no longer
required.

Acquisition of the Certificate's provider_id in Cdm.set_service_certificate() in some edge cases, but also when you
try to remove the certificate by setting it to None.
When exporting a PSSH object it will now do so in the same version it was initially loaded or created in. Previously
it would always dump as a v1 PSSH box due to a cascading check in pymp4. It now also honors the currently set version
in the case it gets overridden.
Improved reliability of computing License Signatures by verifying the signature against the original raw License
message instead of the re-serialized version of the message.
- Some license messages when parsed would be slightly different when re-serialized against my protobuf, therefore the
  computed signature would have always mismatched.