Convert cJSON_Add..ToObject macros into functions with return values

These functions return the added object. Functions to add objects and
arrays have also been added.

287e076 Post release
774da10 Merge pull request #296 from jlindgren90/master
629b86d Merge unity_setup.h into unity.h.
0914d80 Merge pull request #308 from codehearts/patch-1
5ee55fe Fix missing TEST_ASSERT_EACH_EQUAL_HEX_MESSAGE
38c387b Merge pull request #304 from VLambret/master
17d4ea9 Color test results using ANSI escape codes
031b1ba Merge pull request #300 from jsalling/bugfix/greater-than
df78aad Make weak symbol usage more portable:
a7e8797 Fix link errors with MinGW.
94a3008 Update continuous integration to build 32-bit Unity
b119919 Add 64-bit comparison asserts
91bcbe1 Add 'greater/less or equal to' asserts on integers
8caade7 Fix bug in greater/less than asserts on unsigned int
1381a1a Update documentation.
2593c31 Allow suiteSetUp() and suiteTearDown() to be provided as normal C functions.
60def10 Update configuration docs

git-subtree-dir: tests/unity
git-subtree-split: 287e076962ec711cd2bdf08364a8df9ce51e106b

99264bb Merge pull request #37 from FormAPI/missing_parent_key
c2fae3a Added a test case to check replace op with a missing parent key

git-subtree-dir: tests/json-patch-tests
git-subtree-split: 99264bb634d32c03df7472f21afb7d3681d8619e

Remove trailing space

CMakeLists.txt: swap GNUInstallDirs and project

Fix for #202 issue.