Thingsboard-gateway

Minor release with the following improvements.

**Additional features:**
* [Auto-update notifier] Checking for new version is included in the gateway. If the new version will be available, you will know about it from logs.
* [RPC update request] To update your gateway just send RPC requests "gateway_update" and "gateway_restart" from TB to the gateway

**Improvements:**
* [MQTT Connector] Added ability to use JSON-Path Expressions as attribute/telemetry key. Found value will be used as a key on ThingsBoard.

**Bug fixes:**
* [Storage] Major fix in the storage.
* Some fixes.

Minor release with the following improvements.

**Main features:**
* [ODBC Connector] Added ODBC connector, to get information from different databases using ODBC drivers.

**Improvements:**
* [Modbus Connector] Refactored configuration file.

**Bug fixes:**
* [Modbus Connector] Attribute Updates and RPC calls bug fixes.

Minor release with the following improvements.

**Main features:**
* [BACnet Connector] Adding BACnet connector (Some basic services (analogValue, binaryValue, etc.
));

**Improvements:**
* [Modbus Connector] Added new fromat for Modbus RPC request;
* [TB Client] Imrovements for a re-connection to the ThingsBoard;

**Bug fixes:**

* [File Storage] Fix for 284 ;

Minor release with the following improvements.

**Improvements:**
* [Modbus Connector] Adding ability to use parameters from RPC instead of value from configuration 280;

**Bug fixes:**

* [TB sevice] Fix for installation 279;

Minor release with the following improvements.

**Improvements:**
* [Modbus Converter] Improvements in processing data;
* [Modbus Connector] Added more configuration parameters in the configuration file "divider", "multiplier" ;
* [TB gateway service] Improvements in processing data speed;

**Bug fixes:**

* [Modbus Connector] Fix for 271 ;
* [Installation] Fix for 276, Thanks to agtokty ;
* [MQTT Connector] Improvements in MQTT Connector 275 273 thanks to slibutti ;

Minor release with the following improvements.

**Main features:**
* [CAN Connector] Adding CAN bus connector, thanks to anonymous contributor;

**Improvements:**
* [Modbus Converter] Improvements in processing data;
* [Modbus Connector] Added more configuration parameters in the configuration file to increase flexibility (*parity*, *bytesize*, *stopbits*, *strict* mode activation (Use Inter char timeout for baudrates <= 19200)) 266 ;
* [TB Client] Imrovements in connection to the ThingsBoard;
* [Request Connector] Added feature of processing array in response(If response is an array of objects, each element will be processed as an independent object);

**Bug fixes:**

* [Modbus Connector] Fix for 266 ;
* [Installation] Fix for 265, Thanks for investigations to pehedima;
* [TB Gateway Service] Fix for deadlock on telemetry uploading;