Add support for strings in TEST_CASE()

Allow UnityPrintFloat() to print a 7th digit.

Fix undefined behavior when printing INT_MIN/INT64_MIN. (Thanks @jlindgren90 !)

Negating the most-negative signed integer results in overflow, which
is undefined behavior.  Fix this by casting to an unsigned type first
(unsigned overflow is well-defined as it uses modular arithmetic).

Fix (most) Rubocop warnings. (Thanks @jlindgren90 !!!!)

Fixed an "array index out of bounds violation" in the examples. (Thanks @farrrb )

Move license for GitHub detection

Issue #352 uninitialized value warning

Patch 2 (Thanks, @Kochise !)

Some cleanup (Thanks, @Kochise !)

Changed some text issues (Thanks @Delrix)

fixed compile error UNITY_PRINT_EXEC_TIME(). Thanks @meslem12 !

Issue #317 - unity.h should include <stddef.h>

Added include of 'stddef.h' to 'unity_internals.h' if 'UNITY_EXCLUDE_STDDEF_H' is not defined. This adds compiler independent support for the 'NULL' macro.

Get up to date

Print execution time for each test when verbose mode enabled (Thanks @elliot-gawthrop, @shreyasbharath, and everyone who participated in this one!)

Fixed some grammar errors on docs (Thanks @Deryew !)

Fixed grammar errors and some sentences to make it easier to understand

Fix LESS_OR_EQUAL_MESSAGE asserts for HEX32/HEX64 (#337)

Added notes on _MESSAGE assertions in UnityAssertionsReference.md

Macros TEST_ASSERT_LESS_OR_EQUAL_HEX32_MESSAGE() and TEST_ASSERT_LESS_OR_EQUAL_HEX64_MESSAGE() need to be mapped to UNITY_TEST_ASSERT_SMALLER_OR_EQUAL_HEXnn() instead of UNITY_TEST_ASSERT_SMALLER_THAN_HEXnn()

Added notes, why _MESSAGE assertions do not support printf style formatting and how users can work around this limitation (see #331)