v0.12.0

What's Changed

• fix kepler solver and skyplot view by @gwbres in #130
• simplify and improve week counter definitions by @gwbres in #131
• glonass and sbas positioning by @gwbres in #132
• NAV V4: RINEX V4 navigation support by @gwbres in #135
• support NAV V4 frames by @gwbres in #136
• Bibliography by @gwbres in #137
• cli: enhance nav file options by @gwbres in #138
• Release v0.12.0 by @gwbres in #139

Full Changelog: v0.11.1...v0.12.0