Readability tweaks to few glyphs

[mehtapratik]

Hello @tobiasahlin,

Please see the screenshot below for character glyphs comparisons:

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Is there anyway, I can contribute to increase to readability between this glyphs?

Mainly...

1. I would like to make characters like e, c, 9, 6, g, and s more open ended.
2. Add stylistic option for number zero to distinguish from letter O (similar to how hubot sans renders zero).
3. Distinguish lowercase "L" and uppercase "I".

I am not sure which editor you use to open glyph file and contribute. If I know the tool and have access to it, I can raise the PR with suggested fix for your review. I've experience in design, editing paths in Illustrator.