Syntax Tutorial PDF
Improved functionality for testing.
Fix typo postitive on the editing form.

Thanks to Phil Butcher for spotting that.
Update todo list.
Fix codechecker issues.
Merge branch 'master' of github.com:maths/moodle-qtype_stack
Require NumSigFigs to have an option.
Minor improvements to testing scripts.
Added information on performance testing.
Implement Moodle hints for STACK questions.

These are needed by the Interactive behaviour.
Clearer validation messages in Interactive and DF modes.

These show up when the some of the inputs have been left blank, or need
to be verified, but there are no other more specific validation
messages.
(1) improvements to the cache - don't cache CAS results which timeout.
(2) improvement to error reporting.
Merge branch 'master' of github.com:maths/moodle-qtype_stack
Fixed bug with map(f,1/2).  See discussion on Maxima mailing list today.
Add better debug info.
Add better debug info.
Merge branch 'master' of github.com:maths/moodle-qtype_stack
A hard-won test case added....
Further sample materials added.
Editing form now requires options for numerical tests.