Tweaks for consistency (fixes #67) (fixes #75)

[RubenVerg]

⋅ changed to be like a filled jot (shown beside for reference) and «» moved to be positioned like glyphs instead of baseline-aligned (shown alongside functions in a fork)

[abrudz]

Maybe time to align all the dots and make them have sensible relative sizes?

I'd say that Unicode seems to indicate that ∙ is a filled ∘ since they have adjacent code points.

Suggestion (but open for arguments):

· (middle dot), smallest; match the dot in 0

⋅ (dot operator), smaller; match inner whitespace of ∘

∙ (bullet operator), medium; filled ∘

• (bullet), larger; match inner whitespace of ○

● (black circle, not currently in the font) largest; filled ○