What's Changed
* Improve support for sparse arrays
* Add `anchor` argument to `window` (and composite units that use `window`) to alter when in the window the window's timestamp refers.
* Add decorator to profile sub-pub units, now used by GenAxisArray.
**Full Changelog**: https://github.com/ezmsg-org/ezmsg-sigproc/compare/v1.7.0...v1.7.1