General repo cleanup

LICENSE

@@ -1,6 +1,6 @@
 BSD 3-Clause License
 
-Copyright (c) 2018-2023, Łukasz Szeremeta
+Copyright (c) 2018-2024, Łukasz Szeremeta
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

README.md

@@ -1,16 +1,13 @@
 # YARS-PG grammar
 
-[![Test and pre-release](https://github.com/lszeremeta/yarspg/actions/workflows/pre-release.yml/badge.svg)](https://github.com/lszeremeta/yarspg/actions/workflows/pre-release.yml)
-[![DOI](https://zenodo.org/badge/161351716.svg)](https://zenodo.org/badge/latestdoi/161351716)
+[![GitHub Actions Workflow Status](https://img.shields.io/github/actions/workflow/status/lszeremeta/yarspg/pre-release.yml?label=Test%20and%20pre-release)](https://github.com/lszeremeta/yarspg/actions/workflows/pre-release.yml) [![GitHub Release](https://img.shields.io/github/v/release/lszeremeta/yarspg)](https://github.com/lszeremeta/yarspg/releases/latest) [![DOI](https://zenodo.org/badge/161351716.svg)](https://zenodo.org/badge/latestdoi/161351716) 
 
-The YARS-PG serialization is a special version of [YARS](https://github.com/lszeremeta/yars) for property graphs. This serialization is specially designed for property graphs:
+The YARS-PG serialization is designed for property graphs (but not only):
 * YARS-PG supports all the features allowed by the current database systems based on the property graph data model,
 * YARS-PG provides a simple syntax with a reduced number of extra characters,
 * YARS-PG is inspired by the syntax used by popular graph query languages (e.g. Cypher and GQL) to encode the structure of a property graph (i.e. nodes, edges, and properties).
 
-The YARS-PG grammar is written in [ANTLR4](https://github.com/antlr/antlr4). If you prefer [Extended Backus-Naur Form (EBNF)](https://www.w3.org/TR/REC-xml/#sec-notation) notation, you can also see a preview version of [YARS-PG grammar in EBNF](https://github.com/lszeremeta/antlr-yarspg/blob/main/other-notations/YARSpg.ebnf). See [YARS-PG specification](https://lszeremeta.github.io/yarspg/index.html) or detailed [Serialization for Property Graphs presentation](https://www.researchgate.net/publication/340208659_Serialization_for_Property_Graphs) for more details.
-
-This project is based on the [ANTLR grammars-v4 project](https://github.com/antlr/grammars-v4).
+The YARS-PG grammar is written in [ANTLR4](https://github.com/antlr/antlr4). If you prefer [Extended Backus-Naur Form (EBNF)](https://www.w3.org/TR/REC-xml/#sec-notation) notation, you can also see [YARS-PG grammar in EBNF](https://github.com/lszeremeta/antlr-yarspg/blob/main/other-notations/YARSpg.ebnf). You may also see YARS-PG [examples](https://github.com/lszeremeta/yarspg/tree/main/yarspg/examples).
 
 ## Parsers
 
@@ -20,7 +17,7 @@ The YARS-PG parsers are available in the [parsers](https://github.com/lszeremeta
 
 If you want to help build YARS-PG parsers for other languages, please follow the [ANTLR4 documentation](https://github.com/antlr/antlr4/tree/dev/doc) and create a pull request.
 
-See the ``README.md`` file in each parser directory for more details. Ready to use parsers are also available in the Assets section in [Releases](https://github.com/lszeremeta/yarspg/releases).
+See the ``README.md`` file in each parser directory for more details. Ready-to-use parsers are also available in the Assets section in [Releases](https://github.com/lszeremeta/yarspg/releases).
 
 ## Testing grammar
 
@@ -30,6 +27,8 @@ Run tests on files in ``yarspg/examples``:
 mvn clean test
 ```
 
+This project is based on the [ANTLR grammars-v4 project](https://github.com/antlr/grammars-v4).
+
 ## Contribution
 
 Would you like to improve this project? Great! We are waiting for your help and suggestions. If you are new to open source contributions, read [How to Contribute to Open Source](https://opensource.guide/how-to-contribute/).