QH6228 Bug fix - remove offset from coords
Added new convex_hull_image qhull test
Removed trailing whitespaces
Fixed PEP8 spaces
Merge pull request #873 from jmetz/convex_hull_image_qhull_precision_fix

QH6228 Bug fix - remove offset from coords

Fixes issue #871.
Add shaded polygon to lineprofile output
Refactor perp_lines behavior
Add test for LineProfiler tool
Fix aliasing and update docstring
Update test now that aliasing has been removed
Use division consistently between PY2 and PY3
Update test to use floating point images and with updated values
Merge pull request #875 from blink1073/lineprofile-overlay

Add Shaded Polygon to LineProfile Plugin Output

Closes #865
Use frombytes instead of fromstring on PIL images, since the latter is now deprecated
Fix Image.frombytes for older version of Python/PIL
Merge pull request #886 from stefanv/bug/pil-fromstring_to_bytes

Use frombytes instead of fromstring on PIL images