factor out collection of custom properties from possibly multiple NaBL files and reuse it in the properties view strategies
Merge pull request #9 from dcharkes/master

Fix pretty printer for properties view
Merge pull request #10 from metaborg/fix/#841

factor out collection of custom properties
Update readme with instructions on how to update the generated runtime libraries
Markdown format
Apply desugar-after on AST instead of result tuple.
First try to call post analysis transformation hook with partition as term argument.
Revert "First try to call post analysis transformation hook with partition as term argument."

This reverts commit 6e230df1546d5eb7388db925b1757b2f0edf819a.
Specify pre/post analysis transformation interface.
Moved relation lookup and relation match logic into non-task API.
Fix relation match
Fix transitive index relation lookup
Fix get-index-relation not inserting results.
Add interface for custom relation match.
Fix delayed task sometimes not being re-executed.
Allow index and task engine persistence to be turned off.
Added support for raw tasks that do not require any result insertion.
Add interface for creating task objects to evaluator.
Add interface for tasks
Added list and set based tasks