Duplicate icons

[u01jmg3]

Not sure if it's on purpose, but the only icon to be duplicated between ./src/f7 and ./src/sf is the at.svg icon. Should there only be one version? Might be a none issue but still thought it was worth mentioning.

• https://github.com/framework7io/framework7-icons/blob/master/src/f7/at.svg
• https://github.com/framework7io/framework7-icons/blob/master/src/sf/at.svg