Workiva/go-datastructures: A collection of useful, performant, and threadsafe Go datastructures. — A large library of data structures for Go

gojq · pkg.go.dev — jq, but written in Go. Usable as a library.

pointerstructure · pkg.go.dev — Point into a structure with a string

More permissive date parsing for golang — It should try this date parsing library, so perhaps Ekster can show all kinds of items even when dates don't parse with the default date parser.