The NewTagSetFromMap and NewTagSetsFromMaps functions may mislead users into expecting that the ordered tag.Set type can be created from a Go map, when in fact the resulting tag.Set has a non-deterministic order. Deprecate those functions in preparation for them to be removed with v2.0.

Note that users can safely define ordered tag sets using a syntax like

set := tag.Set{{Name: "name", Value: "value"}, ...}

However, that's a bit verbose for longer tag sets, so we should consider adding a convenience function that takes in a list of tag tuples and creates a Set, returning an error if the list length is odd.

func ToSet(tags ...string) (Set, error)

Since that requires users to handle errors, and we typically expect users to define this statically in code, we should also consider adding a shorter convenience function that panics on any errors (inspired by Go's template.Must).

func Must(Set, error) Set

Definition of done:

• Deprecate NewTagSetFromMap and NewTagSetsFromMaps
• Consider adding convenience functions for creating a Set