2014-09-09 blanchet 2014-09-09 use 'datatype_new' (soon to be renamed 'datatype') in Isabelle's libraries
2012-01-05 wenzelm 2012-01-05 improved case syntax: more careful treatment of position constraints, which enables PIDE markup; tuned;
2011-03-29 wenzelm 2011-03-29 tuned headers;
2011-01-04 huffman 2011-01-04 change some lemma names containing 'UU' to 'bottom'
2010-12-15 huffman 2010-12-15 add notsqsubseteq syntax
2010-11-27 huffman 2010-11-27 moved directory src/HOLCF to src/HOL/HOLCF; added HOLCF theories to src/HOL/IsaMakefile;