bump version for arxmliv 2020 docs

Author: dginev

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cortex"
-version = "0.4.2"
+version = "0.4.3"
 edition = "2018"
 authors = ["Deyan Ginev <[email protected]>"]
 license = "MIT"

README.md

@@ -3,7 +3,7 @@
 
 **A general purpose processing framework for corpora of scientific documents**
 
-[![Build Status](https://secure.travis-ci.org/dginev/CorTeX.png?branch=master)](http://travis-ci.org/dginev/CorTeX) [![API Documentation](https://img.shields.io/badge/docs-API-blue.svg)](http://dginev.github.io/CorTeX/cortex/index.html) [![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/dginev/CorTeX/master/LICENSE) ![version](https://img.shields.io/badge/version-0.4.2-orange.svg) [![Dependabot Status](https://api.dependabot.com/badges/status?host=github&repo=dginev/CorTeX)](https://dependabot.com)
+[![Build Status](https://secure.travis-ci.org/dginev/CorTeX.png?branch=master)](http://travis-ci.org/dginev/CorTeX) [![API Documentation](https://img.shields.io/badge/docs-API-blue.svg)](http://dginev.github.io/CorTeX/cortex/index.html) [![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/dginev/CorTeX/master/LICENSE) ![version](https://img.shields.io/badge/version-0.4.3-orange.svg) [![Dependabot Status](https://api.dependabot.com/badges/status?host=github&repo=dginev/CorTeX)](https://dependabot.com)
 
 
 **News**: