Pseudo ttys and constants

Changes for 1.19 - 2023-12-28

• #37 - Remove --no-undefined from compiler test which is not compatible with all platforms.

JSON Web Token

Changes for 0.035 - 2023-10-03

• PR #37 Speed up decode_jwt

Localization support for DateTime.pm

Changes for 1.39 - 2023-05-28

• Fixed parsing of the 'el-polyton' locale code. This had the same issue as 'be-tarask', which was fixed in 1.36. This is now fixed in such a way that similar language+variant codes will be parsed correctly in the future. Reported by @yvanzo. GH #37.