Flag label wrapping at bit column width despite being rotated

[HerrCraziDev]

Using the flag() function, labels that exceed a single bit width are wrapped despite being rotated and thus fitting vertically, as shown in the first screenshot.

fig. 1: Label wrapping incorrectly

Adding reflow: true in rotate() (line 95 of api.typ) fixes the incorrect wrapping.

fig. 2 : Correct labelling

I'll open a PR later if I don't forget, but lemme know if such a small fix really warrants a PR.