Add a supplemental fact
I don't really like this fix, but hey...
Remove mention of framenet from tutorial.
Merge pull request #557 from linas/learn

Fix rare crash during atom deletion.
Merge pull request #558 from linas/einstein

Add a supplemental fact for Einstein puzzle
Update the postgres backend with current status.
Some thoughts, changes, nothing too substantial
Merge pull request #559 from remu5/patch-1

Some thoughts, changes
Add benchmark for AtomSpace with optional concurrency
Add initial documentation / testing notes
Add initial documentation / testing notes
Add initial documentation / testing notes
Merge pull request #560 from cosmoharrigan/concurrency

AtomSpace benchmarking module with concurrency options
status update for language learning.
Add notes about language learning.
Merge pull request #561 from linas/learn

Language learning status updates
Remove obsolete import
Merge pull request #562 from cosmoharrigan/rest

Remove obsolete import
Merge with master