New features
* OME-TIFF files written by Ashlar conform to the [official OME-TIFF pyramid specification](https://docs.openmicroscopy.org/ome-model/6.0.0/ome-tiff/specification.html#sub-resolutions) rather than the unofficial interim pyramid format previously written. (93)
* The `-o` argument supersedes the `-f` and `--pyramid` arguments by allowing the destination filename and format to be included in the path. For example, `-o /path/to/output.ome.tif` will write an OME-TIFF pyramid at the given location, (93)
Bugfixes and other improvements
* Keep the JVM heap (used by the BioFormats file reader) from growing too much (114)
* Memory usage is dramatically reduced. The current usage is the total size of the first cycle's reference channel tiles plus a fixed overhead of about 400 MB.
**Full Changelog**: https://github.com/labsyspharm/ashlar/compare/v1.14.1...v1.15.0