Development

Proposed changes for community commons:

* Introduced rule `IsNotEmptyString`
* Fixed email address regex for long top level domains
* Introduced `XPath.findOrCreateSynchronized` to create guaranteed unique objects. 
* Introduced `RegexQuote`, to be apple to replace with literal values while using Mendix built-in regex functions. 
* Introduced `copyAttributes` to be able to copy similarly named attributes from one object to another, with the need of the objects themselves being of the same type. 
* Improved async function calls (run in background)
* Improved .gitignore file

Not done yet:

* Update version number in module
* Package & release in appstore