Src/toymatrix.h:
- Fixed bug in "operator*=". Array was accessed with [i,j], which of course doesn't work.
- Added arithmetic exception to warn on integer overflow (on floats this might throw).
- Removed "printf"-invokations for debugging.
- Changed local variable "NotTransposed" to lower case.

UnitTests/testtoymatrix.cpp
- Added a test for transposing and multiplying matrices.
- isTransposed() returns bool. Some tests compared to 0 -> fixed.
- Finally renamed TestToyMatrix.cpp to small case version.
Include/arithmeticex.cpp
- removed generic template function "multRangeCheck", which was misplaced into the .cpp anyway.
- Instead the cpp file now has a specialized version for floats.
- Changed the range check in the int spcialization. If op2==-1, every value of op1 is valid except the minimum (because it it max+1 in magnitude).

Src/toymatrix.h:
- the "*=" operator-function was using the int type in one line. Changed that to the generic type "T".

UnitTests/testexceptions.cpp:
- Using limits.h instead of hard-coded boundaries.
- Boundaries in tests were wrong.

UnitTests/testtoymatrix.cpp:
- Added floating point version of multiply and transpose test.