Release 0.2.16

Release 0.2.15

New release

Patch release

Support for cyrillic characters

Support for unicode letters.

Verison fix

Version fix

Release 0.2.5

* Support for new shapes circle,  irregular rectangle
* Support for styling of links
* Support for newlines in texts
* Centered text on links
* Shaded background for text on links
* Support for click on nodes

Updated readme and changes to the coverage setting on the ci server