6.0.0

This brings dhall-golang up to version 19.0.0 of the Dhall standard.

Added

• From Dhall 19.0.0: add Text/replace builtin
• Add dhall-golang json command

The new dhall-golang json command takes some Dhall and outputs it as
JSON, similar to dhall-haskell's dhall json. One key difference is
that it also supports Prelude.JSON types. For example, the following
command:

dhall-golang json <<EOF
let JSON = https://prelude.dhall-lang.org/JSON/package.dhall

in  { x = JSON.natural 4
    , y =
        JSON.array
          [ JSON.string "foo", JSON.natural 4, JSON.null, JSON.bool True ]
    }
EOF

will output:

{
  "x": 4,
  "y": [
    "foo",
    4,
    null,
    true
  ]
}

Changed

• From Dhall 19.0.0: implement with as first-class expression
• Allow unmarshalling Dhall values into interface{}; dhall-golang
  will select appropriate Go types for Dhall values when doing this.