ArduinoJson: change log

HEAD

Remove BasicJsonDocument
Remove StaticJsonDocument
Add abstract Allocator class
Merge DynamicJsonDocument with JsonDocument
Remove JSON_ARRAY_SIZE(), JSON_OBJECT_SIZE(), and JSON_STRING_SIZE()
Remove ARDUINOJSON_ENABLE_STRING_DEDUPLICATION (string deduplication cannot be enabled anymore)
Remove JsonDocument::capacity()
Store the strings in the heap
Reference-count shared strings
Always store serialized("string") by copy (#1915)
Remove the zero-copy mode of deserializeJson() and deserializeMsgPack()
Fix double lookup in to<JsonVariant>()
Fix double call to size() in serializeMsgPack()
Include ARDUINOJSON_SLOT_OFFSET_SIZE in the namespace name
Remove JsonVariant::shallowCopy()