move tabu-search util tests into tabu-search-utils.lisp -- add unit test for initialize
Revert "remove iterations as a default slot for base algo class (greedy-best-insertion does not need it)"

This reverts commit a5ede6b5df99d423d7ca5ad069bfa32b3b79d6b6.
fix solver.lisp util, remove animatep and plot-solution calls
bugfix: set start time in before run-algo method call, instead of solve-prob
do not generate useless moves: avoid single same vehicle moves and avoid single visit moves to empty vehicles with same start and end location
fix assess-move for TS-best-insertion-moves and add unit tests
fix perform-move and add unit tests