[syntax_highlight] Update manifest.ini

* Fixed bug which caused inline code spans of corrected messages to expand
  until the end of the buffer
* Made checking for code spans/blocks more strict (XEP-0393 conform)
* README Updates
* Code Cleanup

syntax_highlight/manifest.ini

@@ -3,7 +3,7 @@
 # branch or so...
 name: Source Code Syntax Highlight
 short_name: syntax_highlight
-version: 1.1.2
+version: 1.1.3
 description: Source Code Syntax Highlighting in the chatbox.
 
 	It uses markdown-style syntax, i.e. text in between `single backticks` is