1. Deleted the information about L76B;
2. Added the information about the L76-L(L) module;
3. Updated the name of PIN2 from TXD1 to TXD;
4. Updated the name of PIN3 from RXD1 to RXD;
5. Updated the name of PIN9 from RESET to RESET_N;
6. Updated the name of PIN14 from VCC_RF to VDD_RF;
7. Updated the name of PIN18 from WAKE_UP to WAKEUP;
8. Added chapters 1.5, 1.6, 3.1, 3.4, 3.5, 5.2.2, 5.3, 8.2, and 9;
9. Updated the maximum altitude and accuracy of 1 PPS signal value
(Table 2);
10. Added the GLP mode (Chapter 3.3.5);
11. Updated the reference design for I2C interface (Figure 12);
12. Updated the recommended reflow soldering thermal profile
(Chapter 8.3).