introduce "Authorization" header name and Request::isStatusSuccessful() auxiliary method
local DNS cache introduced
use binary log file to prevent replacement of '\n' to '\r\n' on Windows
the way that resolve information is displayed has been changed - one line is used now
json::toStrHH() function has been introduced which writes JSON value without quotes if possible
simple string should consists of [A-Za-z0-9_] only

force empty strings to have quotes
json simple string cannot be empty!
ulr_encode()/url_decode() and base64_encode()/base64_decode() functions have been moved to the misc.hpp file

also the URL encode algorithm has been changed
minor changes - some code movings
name cache code of http::Client moved into separate inner class
HTTP module refactoring: now send() methods returns the Task instance

using this Task instance it's possible to subscribe to "done" event
update cloud6 to new HTTP client
bug fix: infinite loop in cancelAll() method of http::Client
support for "No Content" responses
some setters return self reference, Url::toString() method was renamed to toStr()
bug fix: base64_decode() sanity check for 'd'
DeviceHive framework refactoring:

- common interface for Restful and Websocket services!
- automatic (Restful->Websocket) service switching in examples
- Command and Notification should be used via shared pointers
- no more example duplication (Application & ApplicationWS)!
- DelayedTasks was split into two classes: DelayedTask and DelayedTaskList
ping/pong timeouts

(10 seconds idle timeout, 5 seconds pong timeout, 3 attempts)
now ping/pong timeouts are disabled for a while because server doesn't support ping/pong frames yet
release 1.2

- new framework: Restful and Websocket services use the same interface, so separate samples (Application and ApplicationWS) are combined back to one Application.
- DelayedTask and DelayedTaskList: simple abstraction on asio::deadline_timer
- http::Client new interface: uses Task abstraction as a deferred object
- url_encode() and base64_encode() are moved to the misc.hpp
- JSON logger configuration example (still under construction)
merge stable back to support `git describe`