いろんなフォントで「small_letter」変換
Zen Old Minchosmall_letter
Yusei Magicsmall_letter
M PLUS 1small_letter
Shippori Antiquesmall_letter
Yuji Maismall_letter
Dela Gothic Onesmall_letter
DotGothic16small_letter
Train Onesmall_letter
Hira Minchosmall_letter
Potta Onesmall_letter
Reggae Onesmall_letter
Sticksmall_letter
Zen Kurenaidosmall_letter
Kosugi Marusmall_letter
Rampart Onesmall_letter
Hachi Maru Popsmall_letter
New Tegominsmall_letter
RocknRoll Onesmall_letter
Kaisei Decolsmall_letter
「small_letter」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
