Release 1.1.0

Added

• Merge changes from golioth/reference-design-template@template_v1.2.0.
• Add a CHANGELOG.md to track changes moving forward.
• Add debug logging for counters.

Fixed

• Fix some checkpatch and formatting issues.

Changed

• Minor general app cleanup.

Removed

• Remove unsupported board overlays.
• Remove Aludel Mini-specific battery monitor code.
• Remove references to Ostentus.