B4J Library jXmlSaxEnhanced

The current jXmlSax library cannot parse the following xml:
It lacks the character event as discussed here: https://www.b4x.com/android/forum/t...ements-and-text-are-mixed.121134/#post-757245

I modify the jXmlSax library to add the characters event and rename it as jXmlSaxEnhanced.

Code modified: https://github.com/xulihang/B4J_XmlSax/commit/96f0e2b4ad743bb0dbd62e0a3c8288c9d166f941