Release v1.3.263

Changes since v1.3.219:

• Engine: update oto library.
• Engine: slightly improve font alignment.
• Engine: refactor for better localization support.
• Engine: migrate from go-freetype to x/image/font/opentype.
• Mobile: replace the B button by “touching anywhere else” for less visual clutter. Can be reverted by going to the input touch editor and long-pressing an empty space.