ArduinoJson 5.1.1

Removed `String` duplication when one replaces a value in a `JsonObject` (PR bblanchon#232 by @ulion)

ArduinoJson 5.1.0

* Added support of `long long` (issue bblanchon#171)
* Moved all build settings to `ArduinoJson/Configuration.hpp`

ArduinoJson 5.1.0 beta 2

Fixed build on Visual Studio 2010 and 2012, MinGW32 and GCC 5

ArduinoJson 5.1.0 beta 1

* Added support of `long long` (issue bblanchon#171)
* Moved all build settings to `ArduinoJson/Configuration.hpp`

ArduinoJson v5.0.8

* Made the library compatible with [PlatformIO](http://platformio.org/) (issue bblanchon#181)
* Fixed `JsonVariant::is<bool>()` that was incorrectly returning false (issue bblanchon#214)

ArduinoJson 5.0.7

* Made library easier to use from a CMake project: simply `add_subdirectory(ArduinoJson/src)`
* Changed `String` to be a `typedef` of `std::string` (issues bblanchon#142 and bblanchon#161)

**BREAKING CHANGES**:
- `JsonVariant(true).as<String>()` now returns `"true"` instead of `"1"`
- `JsonVariant(false).as<String>()` now returns `"false"` instead of `"0"`

Arduino 5.0.6

* Added parameter to `DynamicJsonBuffer` constructor to set initial size (issue bblanchon#152)
* Fixed warning about library category in Arduino 1.6.6 (issue bblanchon#147)
* Examples: Added a loop to wait for serial port to be ready (issue bblanchon#156)

ArduinoJson 5.0.5

* Add overload `JsonObjectSuscript::set(value, decimals)` (issue bblanchon#143)
* Use `float` instead of `double` to reduce the size of `JsonVariant` (issue bblanchon#134)

ArduinoJson 5.0.4

* Fixed ambiguous overload with `JsonArraySubscript` and `JsonObjectSubscript` (issue bblanchon#122)

ArduinoJson 5.0.3

* Fixed `printTo(String)` which wrote numbers instead of strings (issue bblanchon#120)
* Fixed return type of `JsonArray::is<T>()` and some others (issue bblanchon#121)