Test comments changed callback

[todo]

Rigbox/tests/ExpPanelTest.m

Lines 109 to 114 in cfe8b61

	% 4. TODO Test comments changed callback
	% 5. TODO Check params button function
	inputs = {
	testCase.Parent;
	testCase.Ref;
	testCase.Remote;

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This issue was generated by todo based on a TODO comment in cfe8b61 when #239 was merged. cc @cortex-lab.