[ecabziqn] Base 100

Create a character set to express numbers from 0 to 99, as two small characters stacked vertically, so they take up no more space than a single typical Latin character.  We want it to be legible at low resolutions, so traditional numbers reduced in size probably won't work.  Here is an idea based on various accents:

ring (angstrom)
macron
single double grave acute accents
circumflex hacek
left right wedge

Previously.