4 commits

Author	SHA1	Message	Date
d98762625	cc20ad9567	Add OperationError error type and use for errors to be printed to the output panel	2018-04-27 10:59:53 +01:00
n1474335	e99331f305	ESM: Tidied up Set operations	2018-04-11 17:29:02 +00:00
d98762625	03ecaa81f7	move Set Intersection into its own operation class	2018-04-06 16:52:59 +01:00
d98762625	f491461a57	inital move of two ops	2018-04-04 17:37:19 +01:00