Icon request: Add icon plus-calendar

[five3141two]

Icon name

plus-calendar

Use case

I needed an icon for adding a new calendar item in a web UI.
Places a plus sign into the calendar icon.
The same with minus could be used for deleting an calendar entry from a list of dates.

Screenshots of similar icons

Checklist

• I have searched the existing icons to make sure this icon does not already exist.
• I have searched the existing issues to make sure this icon has not already been requested.
• This icon is not a logo.