Version 1.3.1

Handle a regression when the JWTMissing Key exception was removed when a key is not found in a JWKSet.
This adds a new generic JWKeyNotFound exception now returned by JWS and JWE when a JWKSet is used and JWTMissingKey now subclasses this new exception.
This way code can now simply trap JWkeyNotFound, while older code can still use JWTMissingKey.
Also fix documentation generation.

What's Changed

• Fix issues uncovered by sphinx nitpicking option by @simo5 in #289
• Try to disable HW optimizations on ppc64le by @simo5 in #290
• Introduce a new JWKeyNotFound exception by @simo5 in #292

Full Changelog: v1.3.0...v1.3.1