v2.4.0 - Support Stellarium Mobile

Overview

Added:

• Many enhancments to enable NexStar support for Stellarium Mobile
• Added missing support for NexStar 'h', 'J' and 'm' commands
• Added NexStar 'P' command support for GPS, RTC and get device version (1.6)
• Improved --debug output

Changed:

• Require Go v1.18+

Fixed:

• NexStar tracking mode now reports correctly
• Fix decoding of ISO8601 timestamps which include fractional seconds
  for GetUTCDate
• Incorrectly returned Lat twice instead of lat/long
• Error out if unable to connect to telescope

What's Changed

• add 'J' and 'h' NexStar command support by @synfinatic in #58
• move code around for go install command by @synfinatic in #59

Full Changelog: v2.3.0...v2.4.0