ArduinoJson 6.12.0
* Use absolute instead of relative includes (issue #1072)
* Changed `JsonVariant::as<bool>()` to return `true` for any non-null value (issue #1005)
* Moved ancillary files to `extras/` (issue #1011)

ArduinoJson 6.11.5
* Added fallback implementations of `strlen_P()`, `strncmp_P()`, `strcmp_P()`, and `memcpy_P()` (issue #1073)

ArduinoJson 6.11.4
* Added `measureJson()` to the `ArduinoJson` namespace (PR #1069 by @nomis)
* Added support for `basic_string<char, traits, allocator>` (issue #1045)
* Fixed example `JsonConfigFile.ino` for ESP8266
* Include `Arduino.h` if `ARDUINO` is defined (PR #1071 by @nomis)

ArduinoJson 6.11.3
* Added operators `==` and `!=` for `JsonDocument`, `ElementProxy`, and `MemberProxy`
* Fixed comparison of `JsonVariant` when one contains a linked string and the other contains an owned string (issue #1051)

ArduinoJson 6.11.2
* Fixed assignment of `JsonDocument` to `JsonVariant` (issue #1023)
* Fix invalid conversion error on Particle Argon (issue #1035)

ArduinoJson 6.11.1
* Fixed `serialized()` not working with Flash strings (issue #1030)

ArduinoJson 6.11.0
* Fixed `deserializeJson()` silently accepting a `Stream*` (issue #978)
* Fixed invalid result from `operator|` (issue #981)
* Made `deserializeJson()` more picky about trailing characters (issue #980)
* Added `ARDUINOJSON_ENABLE_NAN` (default=0) to enable NaN in JSON (issue #973)
* Added `ARDUINOJSON_ENABLE_INFINITY` (default=0) to enable Infinity in JSON
* Removed implicit conversion in comparison operators (issue #998)
* Added lexicographical comparison for `JsonVariant`
* Added support for `nullptr` (issue #998)

ArduinoJson 6.10.1
* Fixed error "attributes are not allowed on a function-definition"
* Fixed `deserializeJson()` not being picky enough (issue #969)
* Fixed error "no matching function for call to write(uint8_t)" (issue #972)

ArduinoJson 6.10.0
* Fixed an integer overflow in the JSON deserializer
* Added overflow handling in `JsonVariant::as<T>()` and `JsonVariant::is<T>()`.

ArduinoJson 6.9.1
* Fixed warning "unused variable" with GCC 4.4 (issue #912)
* Fixed warning "cast  increases required alignment" (issue #914)
* Fixed warning "conversion may alter value" (issue #914)
* Fixed naming conflict with "CAPACITY" (issue #839)
* Muted warning "will change in GCC 7.1" (issue #914)
* Added a clear error message for `StaticJsonBuffer` and `DynamicJsonBuffer`
* Marked ArduinoJson.h  as a "system header"

ArduinoJson 5.13.5
* Fixed warning "unused variable" with GCC 4.4 (issue #912)
* Fixed warning "maybe uninitialized" (issue #909)
* Added an clear message for `StaticJsonDocument`, `DynamicJsonDocument`...

ArduinoJson 6.9.0
* Decode escaped Unicode characters like \u00DE (issue #304, PR #791)

ArduinoJson 6.8.0-beta
* Import functions in the ArduinoJson namespace to get clearer errors
* Improved syntax highlighting in Arduino IDE
* Removed default capacity of `DynamicJsonDocument`
* `JsonArray::copyFrom()` accepts `JsonArrayConst`
* `JsonVariant::set()` accepts `JsonArrayConst` and `JsonObjectConst`
* `JsonDocument` was missing in the ArduinoJson namespace
* Added `memoryUsage()` to `JsonArray`, `JsonObject`, and `JsonVariant`
* Added `nesting()` to `JsonArray`, `JsonDocument`, `JsonObject`, and `JsonVariant`
* Replaced `JsonDocument::nestingLimit` with an additional parameter

ArduinoJson 6.7.0-beta
* Removed the automatic expansion of `DynamicJsonDocument`, it now has a fixed capacity.
* Restored the monotonic allocator because the code was getting too big
* Reduced the memory usage
* Reduced the code size
* Renamed `JsonKey` to `JsonString`
* Removed spurious files in the Particle library

Removed spurious files in the Particle library

ArduinoJson 6.6.0-beta
* Removed `JsonArray::is<T>(i)` and `JsonArray::set(i,v)`
* Removed `JsonObject::is<T>(k)` and `JsonObject::set(k,v)`
* Replaced `T JsonArray::get<T>(i)` with `JsonVariant JsonArray::get(i)`
* Replaced `T JsonObject::get<T>(k)` with `JsonVariant JsonObject::get(k)`
* Added `JSON_STRING_SIZE()`
* Replacing or removing a value now releases the memory
* Added `DeserializationError::code()` to be used in switch statements (issue #846)

ArduinoJson 6.5.0-beta
* Added implicit conversion from `JsonArray` and `JsonObject` to `JsonVariant`
* Allow mixed configuration in compilation units (issue #809)
* Fixed object keys not being duplicated
* `JsonPair::key()` now returns a `JsonKey`
* Increased the default capacity of `DynamicJsonDocument`
* Fixed `JsonVariant::is<String>()` (closes #763)
* Added `JsonArrayConst`, `JsonObjectConst`, and `JsonVariantConst`
* Added copy-constructor and copy-assignment-operator for `JsonDocument` (issue #827)

ArduinoJson 5.13.3
* Improved float serialization when `-fsingle-precision-constant` is used
* Fixed `JsonVariant::is<int>()` that returned true for empty strings
* Fixed `JsonVariant::is<String>()` (closes #763)

ArduinoJson 6.4.0-beta
* Copy `JsonArray` and `JsonObject`, instead of storing pointers (issue #780)
* Added `JsonVariant::to<JsonArray>()` and `JsonVariant::to<JsonObject>()`

ArduinoJson 6.3.0-beta
* Implemented reference semantics for `JsonVariant`
* Replace `JsonPair`'s `key` and `value` with `key()` and `value()`
* Fixed `serializeJson(obj[key], dst)` (issue #794)