"DEACT" error

• Add "DEACT" error;
• Correct printf placeholder params for unsigned;

Added publishing functions for numeric types

New version of the library

• Corrected delay on PUB SUB functions;
• Added publishing functions (MQTT_PubUint8, MQTT_PubUint16, MQTT_PubDouble, etc ) for numeric types:
  • uint8_t;
  • uint16_t;
  • uint32_t;
  • float;
  • double;

MQTT PubSub version

The new version of the library to work with MQTT through AT commands.

Added support for MQTT subscriptions.

Optimized work with SIM800:

• work is performed through the transparent mode;
• increased the buffer size to the maximum for SIM800 and now is 1460 bytes.

Small bugfixes by code.