Trivial utilities and helper packages

A default place to drop OS-independent pieces of code which lacks scope and general purpose.

Index

• httpdir: serve directory using the HTTP (see httpdir -h)
• oapidef: OpenAPI/Swagger definition generator from the given JSON sample (see oapidef -h)
• dumpfmt: dump printf-like format strings from the .go source files, semi-generic draft
• miniredis-standalone: use github.com\alicebob\miniredis as a stand-alone server with the simple persistence (per-DB YML) and restore on start.