1.1-7
* tsp_solver: fixed math rendering problems in the manual


1.1-6 
* tsp_solver: bug fixed with checking column-wise degree constraints  


1.1-5
* tsp_solver: lower_bound and upper_bounds can now be extracted as output values of the function



1.1-4 

* tsp_solver() function has been added. This solves a travelling salesperson problem via combining heuristics and a linear Diophantine equation relaxation. 

* get.knapsack: a bug fixed with checking for 0-1 and bounded solutions