Fixes hashtags not being interpreted when the author uses a fullwidth number sign (#, U+FF03). ref: https://github.com/r888888888/danbooru/issues/3719#issuecomment-419535610
Fixes hashtags not being interpreted when the author uses a fullwidth number sign (#, U+FF03). ref: https://github.com/r888888888/danbooru/issues/3719#issuecomment-419535610