7 commits

Author	SHA1	Message	Date
Graham Nelson	e4251bf5d7	Added variance test case	2020-08-12 13:07:35 +01:00
Graham Nelson	9a97eebe02	Clarified kind conformance order relation	2020-08-11 23:59:29 +01:00
Graham Nelson	ebc90ce213	Join and meet operations on kinds	2020-08-11 15:07:58 +01:00
Graham Nelson	83dcd79164	Improved kind-checking of contravariant constructors	2020-08-11 11:55:39 +01:00
Graham Nelson	4ab9cf250d	Further testing of kinds	2020-08-09 23:42:41 +01:00
Graham Nelson	23041df765	Further work on kinds module and its testing	2020-08-09 18:39:31 +01:00
Graham Nelson	dd0605493a	Moved kinds module to services library and added test utility	2020-08-08 17:40:02 +01:00