Performance enhancement and Debug Logging

Increased overall performance. Moved ScriptEngine generation into static variable generation of JsFormValidation class to ensure cached engine is used. This has decreased form submission time down to sub 80ms. Previous performance was in the 500-800ms per submission.

Added debug logging statements with Camunda Commons Logging util. See io.digitalstate.camunda.JsFormValidationLogger.

v0.3.0 - Dynamic JS file selection

Added ability to define specific javascript files on a validator. This enables the different validator files/js to be used on Start Events and User Tasks, rather than a single js file which tends to get very large (and slower to load)

Update with Validate.js usage

v0.1.1

Add Validate.js support and docs

Initial release

Initial release for testing and feedback.