separated core debugger test into different models
fixed broken debugger function test
fixed broken flag debugger test
highlighting of current node didn't work, if node wasn't of type ISteppable
markers can now also be set on ISteppableContexts (e.g., Functions, TestCases etc.)
fixed broken Ranges debugger Test
fixed some broken BlockExpr debugger tests
added test cases for reporting
added debugger tests for struct init/assignment
fixed broken reporting debugger test
changed constant in DebuggerTestMethod's editor
debugger testing framework provided stack frames in wrong order
Call Stack validation in debugger tests now shows the index of stack frames
editor of stack frames (debugger testing) now also shows the stack frame index
Validation is now abstract; Changed CallStack editor for better UX
Function's debugger test had wrong ordering in stack frames
stackframe ordering in BlockExpr. debugger test was wrong
StackFrame ordering in UnitTest test cases was wrong
added DecTable debugger test case
splitted up unitTest-related debugger tests  into a 'testcase' and a 'statement' model