Merge branch 'devel' of github.com:DavePearce/Whiley
Merge branch 'devel' of github.com:DavePearce/Whiley
Merge branch 'devel' of github.com:DavePearce/Whiley
Merge branch 'devel' of github.com:DavePearce/Whiley
Merge branch 'devel' of github.com:DavePearce/Whiley
WYRL: minor corrections to documentation.