Allow selecting default sort method from command line

[anntzer]

Usually I am mostly interested in sorting profiling results by OwnTime or TotalTime, so my workflow with py-spy is nearly always to press 3 or 4 right after launching it. It would be a small usability improvement if we could have something like py-spy --sort-by=OwnTime ....

[benfred]

The latest version of py-spy (v0.2.0) defaults to column 3 now - not fully what you're looking for but hopefully a better default

[anntzer]

thanks :)