Add prattle (#5082)

README.md

@@ -2468,6 +2468,7 @@ See also [Natural Language Processing](#natural-language-processing) and [Text A
 - [omniparser](https://github.com/jf-tech/omniparser) - A versatile ETL library that parses text input (CSV/txt/JSON/XML/EDI/X12/EDIFACT/etc) in streaming fashion and transforms data into JSON output using data-driven schema.
 - [parseargs-go](https://github.com/nproc/parseargs-go) - string argument parser that understands quotes and backslashes.
 - [parth](https://github.com/codemodus/parth) - URL path segmentation parsing.
+- [prattle](https://github.com/askeladdk/prattle) - Scan and parse LL(1) grammars simply and efficiently.
 - [sdp](https://github.com/gortc/sdp) - SDP: Session Description Protocol [[RFC 4566](https://tools.ietf.org/html/rfc4566)].
 - [sh](https://github.com/mvdan/sh) - Shell parser and formatter.
 - [tokenizer](https://github.com/bzick/tokenizer) - Parse any string, slice or infinite buffer to any tokens.