Break deviation calc out into get_dev function
Clean up deviation table printing
Move progress report cleanup to fix_brushes
Adjust help text cosmetically
Lift dev table summary out of condition

Accounts for zero length suspects list.
Switch get_dev to divide/quant/multiply approach

Proper way to round to nearest multiple; quantize itself only uses the
provided value as a pattern, rounding to that number of decimal places.
Implement snaplo/snaphi parameters

Coordinates with deviations equal to or greater than thresh can now be
rounded, and to a different value from those below thresh.
Replace get_dev's max - min with abs

Provides the same result, but looks neater.
Move brush rounding into thresh/snaphi condition

When not specifying snaphi, brushes whose max deviation is equal to or
greater than thresh will be displayed as suspects and not rounded.
Remove regex parameter from fix_plane
Improve code cosmetics
Update docstrings
Collapse redundant statements in fix_plane
Restrict fix_plane's normalize call to decimals

Prevents ugly scientific notation of perfectly sane integers.
Add snaphi test map
Adjust whitespace
Update setup script and readme

Major version increased because fix_plane lost its regex parameter.
Bump version displayed in help message
Remove redundant entry from .gitignore