unity_test_summary.py recursive search for test files

Fix travis config: Use ruby 2.3

use unary minus on the incoming int instead of the casted uint

Removed leading underscore from module generator header guards. (Thanks @detly !)

Added braces to avoid implementation solely based on operator precedence. (Thanks @farrrb ! I love cleanup like this!)

Fix error in example_1

This test case had an error in both examples:
test_FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode

It was supposed to be a list of values that are NOT in the list,
and none of them should be found.  It incorrectly included '1'

This test case had an error:
test_FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode
It was supposed to be a list of values that are NOT in the list,
and none of them should be found.  It incorrectly included '1'
which is a value in the list.

The compile option -Wno-misleading-indentation was also added to
remove a compiler warning produced by gcc 7.3.0

Feature printf (Thanks @farrrb !)

Make unity.c compatible with c90

Avoid declaring the loop variable inside the for statement to keep
compatibility with c90:

unity.c:1408: error: for' loop initial declaration used outside C99 mode

Macro UNITY_EXCLUDE_PRINT_FORMATTED changed to UNITY_INCLUDE_PRINT_FORMATTED.
Enable printf via "-DUNITY_INCLUDE_PRINT_FORMATTED" compiler option.

# Conflicts:
#	src/unity.c

Generate runner defines with #ifndef guards

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 !)