HaroldMills/Vesper: v0.4.7

This release:

• Adds the BirdVoxDetect 0.1.a0 nocturnal flight call detector from the BirdVox project. Five different variants of the detector appear in Vesper, with nominal thresholds of 30, 40, 50, 60, and 70. All of the thresholds are adaptive, with a context duration of 30 minutes.

• Adds a workaround to the MPG Ranch tseep and thrush detectors concerning a problem that sometimes arises with multiple copies of the OpenMP runtime.

• Fixes a bug in the delete clips command on Windows. The bug caused the command to fail when attempting to delete clips for a night with approximately 1000 clips or more.