SIPDA: add set!
Improve set! implementation
Disable vizgraph logging
Delete trailing whitespaces
Merge branch 'master' of https://github.com/jensnicolay/jipda

Conflicts:
	cesk/jsCesk.js
	driver/pushdown.js
	instance/jipda/build.js
	instance/jipda/test/jipdaTests.js
	instance/sipda/test/concreteTests.js
	instance/sipda/test/sipdaTests.js
	lib/web/vizgraph.js