instagraph updates
let different chart types (area: "fill") not be style
run
show legend as plot_info for matlab's strip style
run
assume symbols are used to distinguish data

and therefore are plot_info, not style
run
line widths as style; figure widths as plot_info
run
log axes as plot_info
run
fix width characterization
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update width in a diff place
run
Merge pull request #21 from plotly/matlab-strip-style-mods

Matlab strip style mods