Added utility routines for common patterns
Added utility routines for common patterns

lylex/gojsonschema,sanathb/gojsonschema,xyliuke/gojsonschema,mickep76/gojsonschema,slapresta/gojsonschema,realglobe-Inc/gojsonschema,brandur/gojsonschema,xeipuuv/gojsonschema,pki-io/gojsonschema,stephensearles/gojsonschema,cristiangraz/gojsonschema