updated line to use new style methods
hack at getting line to redraw
Alternate update to get redrawing hooked properly
Merge 'line_style_redrawing' onto 'line_style'
Merge branch 'master' into line_style
updated style to initialize all styles
Merge branch 'master' into line_style
edited accessors and changed common style
fixed specs problem in margins and links
changed how point_b is set
added set_point_a method
Merge pull request #821 from shoes/line_style

Updates line to use new style methods

Changelog: improvement