Iosevka version 1.0-beta1, codename Yoikata

Iosevka finally reaches its most important milestone: the first public beta for v1.0. In the last week I changed many things of it, including:

• Made horizontal stems thinner than vertical stems.
• Reimplemented many glyps with libspiro.
• Redesigned letters with shoulders, like n and u.
• The number four (4) is completely redrawn. The current one is much better.
• Letter j (as well as related letters) are redrawn and rebalanced.
• Hook shapes, like the hook in f, are redrawn.
• I included a dummy DSIG for every font file, which enables OpenType features in MS Office.