PEP8 fixes on the line module
PEP8 fixes on lines
Added back imports in lines for backward compatibility
PEP8 replaced trailing backslash with temporary variable
PEP8 Renamed temporary variable
In macosx backend, move the coordinate message closer to the icons, to reduce clipping by the window edge.
Fix problems related to streamplot in boilerplate.py
Merge pull request #1728 from jwoillez/fix-macosx-msg

Macosx backend: tweak to coordinates position
Merge pull request #1577 from NelleV/pep8_lines

PEP8 fixes on the line module
Fix floating-point in affine transformation on x86 vs v86-64
Merge pull request #1726 from mdboom/affine_transform_math

stackplot_test_baseline has different results on 32-bit and 64-bit platforms