* Added modified 'prompt' which repeats until validate is satisfied (including if varname has been set in ENV but does not validate). * 'validate' of 'prompt' is also overloaded to convert a string literal into a regexp used for validation (using the 'Matcher' helper class).
* Added modified 'prompt' which repeats until validate is satisfied (including if varname has been set in ENV but does not validate).
* 'validate' of 'prompt' is also overloaded to convert a string literal into a regexp used for validation (using the 'Matcher' helper class).

mathiasertl/fabric,kxxoling/fabric,elijah513/fabric,SamuelMarks/fabric,bspink/fabric,MjAbuz/fabric,cgvarela/fabric,cmattoon/fabric,sdelements/fabric,ericholscher/fabric,raimon49/fabric,jaraco/fabric,rodrigc/fabric,kmonsoor/fabric,fernandezcuesta/fabric,qinrong/fabric,felix-d/fabric,ploxiln/fabric,akaariai/fabric,TarasRudnyk/fabric,pgroudas/fabric,askulkarni2/fabric,simon-engledew/fabric,getsentry/fabric,itoed/fabric,rbramwell/fabric,haridsv/fabric,bitprophet/fabric,xLegoz/fabric,tekapo/fabric,bitmonk/fabric,likesxuqiang/fabric,opavader/fabric,amaniak/fabric,pashinin/fabric,StackStorm/fabric,hrubi/fabric,tolbkni/fabric,rane-hs/fabric-py3