removed valid flag in DigTarget
removed assignment operator, relies on compiler to generate one (todo, write a real one)
added isequal operator test for DigTarget (todo, implement operator)
it seems to mark trees correct now! :D
Tools are now useful, and with a working user interaction where applicable.
Examples are a collection of benchmarks, tests and simple unfinished ideas.
mizipzor
Petr Mrázek