Fix encode_string_as_pointer

updating doc

Revert "use prev pointer when array do adding"

This reverts commit e8077d01.

* use prev pointer when array do adding

formatting README.md

Add vcpkg installation instructions

update CHANGELOG

Update cJSON_Utils.c to avoid ‘CJSON_DOUBLE_PRECIION’ undeclared

fix typo

Fix clang -Wfloat-equal warning

fix issue#327

fix memory leak mentioned in issue 414

Added blank lines in Readme.md

Added blank lines before list items and headings. This change creates consistency between different markdown parsers. There's no difference in the output of Github flavored markdown.

See https://babelmark.github.io/

Fixed different argument between declaration and definition

fix make failed in mac os

CMake: add uninstall target

* fix rmdir error