Introduce 'allowSpecialFloats' for readers and 'useSpecialFloats' for writers, use consistent macro snprintf definition for writers and readers, provide new unit tests for #209
Otherwise, on some 32 bit platforms this may not fit into long and compilation will fail:
src/test_lib_json/main.cpp:1260: error: integer constant is too large for 'long' type
* Clean up closing statements for if conditions, functions, macros,
and other entities. Newer versions of CMake do not require you to
redundantly respecify the parameters to the opening arguments.
This commit contains nothing but line ending normalization
changes. These changes were performed after the introduction
of .gitattributes into the repository.
-Werror shouldn't be used in released code since it can cause random build
failures on moderate warnings. It also depends on the used toolchain since
different toolchains may or may not print the same warnings.
`-std=c++11` for gcc builds too
There was an issue with Travis, but we seem to be past that now.
We were using only -std=c++0x for gcc, as you can see in the diff.
resolves#134
fix appveyor 32-bit windows build
I've backed rebased under #297 because AppVeyor has been failing since there, and because that was not properly based on master anyway.
* http://help.appveyor.com/discussions/problems/2229-v140-not-found-on-vs2105rc
```
Done Building Project "C:\projects\jsoncpp\jsoncpp.sln" (default targets) -- FAILED.
Build FAILED.
"C:\projects\jsoncpp\jsoncpp.sln" (default target) (1) ->
"C:\projects\jsoncpp\ALL_BUILD.vcxproj.metaproj" (default target) (2) ->
"C:\projects\jsoncpp\ZERO_CHECK.vcxproj" (default target) (3) ->
(PlatformPrepareForBuild target) ->
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.Cpp.Platform.targets(64,5): error MSB8020: The build tools for v140 (Platform Toolset = 'v140') cannot be found. To build using the v140 build tools, please install v140 build tools. Alternatively, you may upgrade to the current Visual Studio tools by selecting the Project menu or right-click the solution, and then selecting "Upgrade Solution...". [C:\projects\jsoncpp\ZERO_CHECK.vcxproj]
```
