Log Message:
editors/tp-note: update to 1.17.3

-Upgrade dependencies
-Functional tests: unset `TPNOTELANG`
-Derive also `Eq`
-Reborrow without "deref on an immutable reference"
-Depreciate gzip in `docs/build/man`
-Avoid allocating substring
-Use `unsigned_abs()` for isize -> u64
-Remove redunant import
-Use const where possible
-Update man-page