wffweb-2.1.12

Release changes :

New features:-

Implemented the following methods for tags
toBigHtmlString methods
toBigOutputStream methods

Improvements and bug fixes

Thread safety improvements for AbstractHtml#toHtmlString() method
Improvements for AbstractHtml#toHtmlString() method to return the modified html
string (requested ticket: #41)
Improvements for AbstractHtml#setChildren() method
Minor performance improvements