Add exemplars and datasets, link puzzles to exemplars.
Add citrus to dependencies
Move shell utils in Rakefile itself.
Prepare for additional database configurations.
Add Sql and Rel DBMS abstractions with basic commands.
Fix finitio schema
Be ready for logging SQL queries.
Add --queries option to check command. Add DBMS helper.
Fix the Tutorial D grammar.
Fix SQL DBMS.
Add some tests for Tutorial D grammar.
Evaluation infrastructure on the database side.
Hardcoded evaluation for 2014