Beginnings of clock triggered tutorial.
Merge remote branch 'upstream/master' into clock-triggered-tutorial
Further fleshing out and skeleton of tutorial slides.
15-minute examples added to tutorial.
Interim commit.
Grammar, punctuation and typo corrections.
Ran through tidy.
Hide invalid roses directories.
Outline for changes.
Fixed semicolon.
Merge pull request #759 from arjclark/invalid-working-copies

rosie go, lookup, ls: do not display invalid-named working copies
Implement feedback.
Fixed a heading.
Missing word.
Merge remote branch 'upstream/master' into rose-edit-spinner-integer
Merge branch 'master' of github.com:metomi/rose into gh-pages
rose edit: fix latent file page
Merge pull request #762 from benfitzpatrick/rose-edit-fix-latent-page

rose edit: fix latent file page
Use entry rather than spinner for out of bounds ints.
Merge remote branch 'upstream/master' into rose-edit-spinner-integer