Implement "move" equivalent of assignment operator for StrPair
add simple test for not-crashing
Merge branch 'properStrPairAssignment' of https://github.com/Dmitry-Me/tinyxml2 into Dmitry-Me-properStrPairAssignment
fix merge of operator=
Merge remote-tracking branch 'origin/master' into Dmitry-Me-properStrPairAssignment
very minor cleanup of commented out code
Merge remote-tracking branch 'origin/master'
switch to using pointer, not reference
Merge branch 'Dmitry-Me-properStrPairAssignment'