Revision history for Algorithm-Graphs-TransitiveClosure-Tiny 1.01 2022/04/08 Minor improvement of the POD section 1.00 2022/01/16 - The second argument is now optional and has a different meaning. - Empty subhashes are removed by default. - The keys (vertices) no longer have to be integers, any strings can be used. - Adapted POD. 0.03 2022/01/14 Added test, corrected typos in POD. 0.02 2022/01/14 Improved POD. 0.01 2022/01/13 First version, released on an unsuspecting world.