Version 1.8.8

This release:

• adds support for autoDOP and autoHPPOSLLH (thank you @dotMorten)
• adds getGnssFixOk and getDiffSoln (thank you @dotMorten)
• adds all of the multiSetVal keys for the F9
• corrects the default layers for newCfgValset8/16/32 (thank you @markuckermann)
• parses the NED velocities (thank you @balamuruganky)
• adds Zephyr support (thank you @vid553)
• corrects some bit-wise AND errors in the dead-reckoning functions (thank you @rubienr)
• corrects the #define for Serial vs SerialUSB (thank you @adamgarbo)
• corrects a buffer overrun issue (thank you @nelarsen)
• adds additional parsing support for Series 7 PVT (thank you @JasonRJ)
• adds pushRawData which can be used to push (e.g.) RTCM data directly to the module (thank you @shaneperera and @mstranne)