CLOSES #779 , CLOSES #743 + new font

assets/fonts/plainpixel/README.md

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+# Plain Pixel font
+
+"Plain Pixel Font" by Douglas Vautour (Burpy Fresh) is licensed under
+CC-BY 4.0: https://burpyfresh.itch.io
+
+Version 0.009 (CJK character additions), unmodified. Characters for most
+languages have a 5x11 base but can extend vertically; double-width
+characters such as Hiragana and Katakana are 11x11.
+
+Bundled so a translation mod can opt into TTF text rendering
+(`mod.content.font:register("ttf", {})`; see the Translation support
+section of docs/new-features.md) instead of drawing hundreds of glyph-page
+tiles. The tile font extracted from the player's ROM stays the default.