Cannot specify compresslevel on save #382
Description
Gzip allows a compression level. ImageOpener can handle a compresslevel parameter. However, save, to_filename, and to_file_map do not expose this to the user. Seems the only way to do this is to change the default_compresslevel
load does allow the user to specify optional arguments; seems it would be useful to do for save...
This is preventing me from speeding up creation of large images for testing, but I could imagine someone wanting to vary the compression level (higher or lower; default is minimal, after all).
Feel free to close as wontfix or let me know if I'm missing the way to do this.