Deprecation warnings in segment_pie_auto

[tlancon]

`>>> ppp.measure_radius(whole_file)

automatic_mask = ppp.segment_pie_auto(whole_file, radius=250, radius_width=20)
C:\Users\tlanc\Documents\GitHub\pypiepi\pypiepi.py:225: FutureWarning: draw.circle is deprecated in favor of draw.disk.draw.circle will be removed in version 0.19
rr, cc = _circle(cy, cx, r-int(radius_width/2), shape=input_image.shape)
C:\Users\tlanc\Documents\GitHub\pypiepi\pypiepi.py:228: FutureWarning: draw.circle is deprecated in favor of draw.disk.draw.circle will be removed in version 0.19
rr, cc = _circle(cy, cx, r + int(radius_width / 2), shape=input_image.shape)
C:\Users\tlanc\AppData\Local\Programs\Python\Python39\lib\site-packages\skimage\morphology_deprecated.py:5: skimage_deprecation: Function watershed is deprecated and will be removed in version 0.19. Use skimage.segmentation.watershed instead.
def watershed(image, markers=None, connectivity=1, offset=None, mask=None,`