Fixed an issue in implementation of ticket #395
Implemented ticket #320 "Create GUI dialog functions/commands"
Fixed an implementation in ticket #410
Implemented ticket #458 "Change alpha and number of contour lines in plots"
Resources for ticket #395
Implemented ticket #395 "Improve the debugger"
Implemented part of ticket #395 Pre-reordering commit
Implemented ticket #462 "Improve the internal architecture of 'Define'"
Implemented ticket #463 "Allow infinity values in tables"
Implemented ticket #457 "Implement an 'end' constant for tables"