Something ends up requiring the slices package, which was added in Go
1.21.

Signed-off-by: Stephen Kitt <skitt@redhat.com>

Test with Go 1.21 and later

go.mod requires Go 1.12, separate 1.10+ files are no longer needed.
This merges their contents with the main files.

Signed-off-by: Stephen Kitt <skitt@redhat.com>

Merge Go 1.10+ files

Handle unhashable keys during merge

Currently `%v` is used inside an `Errorf` call, this means the original errors is lost and cannot be unwrapped to. 

By changing it to `%w` the error is preserved and can be retrieved with `errors.As`.

fix: wrap errors returned by JSON unmarshal

This isn't used anymore, so clean it up.

Remove old travisci config file

Test against go 1.24.x

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

….v3-goyaml.v2-and-redirect

Deprecate code in goyaml.v2 (and v3) directories and redirect to equivalents in go.yaml.in/yaml/v2 (and v3)

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

…for-constants

Forgot to add redirects for v3 constants