Update katex plugin to latest v0.10.2 (#4133)

* update katex.min.js to v0.10.2

* update katex-without-fontface.min.js to latest

* Update katex.min.css

* Update katex.js

* update katex fonts

* Delete katex.js ...

... we're using katex.min.js

* add version number to plugin.info

* Update readme.tid

* Create katex.js

* Update plugin.info

plugins/tiddlywiki/katex/plugin.info

@@ -3,5 +3,6 @@
 	"description": "KaTeX: mathematical typography",
 	"author": "JeremyRuston",
 	"core-version": ">=5.0.0",
-	"list": "readme usage"
+	"list": "readme usage",
+	"library-version": "v0.10.2"
 }

plugins/tiddlywiki/katex/readme.tid

@@ -1,6 +1,6 @@
 title: $:/plugins/tiddlywiki/katex/readme
 
-This is a TiddlyWiki plugin for mathematical and chemical typesetting based on [ext[KaTeX from Khan Academy|http://khan.github.io/KaTeX/]] and [ext[mhchem|https://github.com/mhchem/MathJax-mhchem]] through a [ext[Katex extension|https://github.com/KaTeX/KaTeX/tree/master/contrib/mhchem]].
+This is a TiddlyWiki plugin for mathematical and chemical typesetting based on [ext[KaTeX from Khan Academy|http://khan.github.io/KaTeX/]] (v0.10.2) and [ext[mhchem|https://github.com/mhchem/MathJax-mhchem]] through a [ext[Katex extension|https://github.com/KaTeX/KaTeX/tree/master/contrib/mhchem]].
 
 It is completely self-contained, and doesn't need an Internet connection in order to work. It works both in the browser and under Node.js.