Use the AtomSpace to store inference history and check for repeated inferences
Rule recording, inference history printing and cycle checking in the new system
Lookup previous inputs to temporal rules using the new system
PLN algorithmic documentation
Fix a test
Merge branch 'master' of git://github.com/opencog/opencog
Merge branch 'master' of git://github.com/opencog/opencog
Merge branch 'master' of git://github.com/opencog/opencog
Fix a weird bug caused by a Python design flaw
Remove print statement
Fix some tests and disable others
Some rules have 0 inputs and that's important
It's possible to turn off the cycle checking
You can disable checking for repeats
Prevent an impossible combination of PLN settings
Merge pull request #688 from jadeoneill/master

Purely AtomSpace-based PLN history system
Update PLN instructions to reflect types fix from #657 and #499 and update formatting in algorithms.md
Update PLN README
Update PLN README
Update PLN README