Add support for TEST_RANGE with exclusive end

If the range is <start, end, step> instead of [start, end, step], the
end value will not be included in the range.

This can be useful if you have a define that defines e.g. the size of
something and you want to use this define as the end value. As the
pre-processor doesn't evalutate expressions (unless you do some macro
magic) you can't specify the range as [0, MY_SIZE - 1, 1]. With this
change you can then instead give the range <0, MY_SIZE, 1>.

src/unity.h

@@ -89,7 +89,7 @@ void verifyTest(void);
  *     - define UNITY_SUPPORT_TEST_CASES to include the TEST_CASE macro, though really it's mostly about the runner generator script
 
  * Parameterized Tests
- *     - you'll want to create a define of TEST_CASE(...) which basically evaluates to nothing
+ *     - you'll want to create a define of TEST_CASE(...) and/or TEST_RANGE(...) which basically evaluates to nothing
 
  * Tests with Arguments
  *     - you'll want to define UNITY_USE_COMMAND_LINE_ARGS if you have the test runner passing arguments to Unity