Zak Blacher

I'm not sure if this is a bug in this or `libucl` proper, but there seems to be some inconsistency when it comes to serialization and deserialization of maps. ```go...

Wrong `alg` used in header for Ed25519 keys

14

The example tokens in this library use `"alg": "ED25519"`, but the related spec seems to suggest that it be `"EdDSA"` instead. https://tools.ietf.org/html/rfc8037#appendix-A.4

Added optional support for pulling config variables out of the environment. Any envar prefixed with `EVANS_` maps to a nested configuration value as defined in the current config spec.