[Feature Request] Add columns

[althe1]

The ability to add a new column. I like to use 20+ columns for my workflow and would like to add more columns with a + button. This along with renaming and deleting, which already is an issue, would make the Kanban board better than almost anything out there.

[HoBool]

I must say, that i donot really like the position of "+New Column". It costs so many places for just a few words.