Expand vType in plot_3d_slicer

[prisae]

The plot_3d_slicer introduced in v0.3.4 has a vType-argument, but at the moment only CC is implemented.

Expand it to accept same vType-list as plotSlice:
CC, CCv, N, F, E, Fx, Fy, Fz, E, Ex, Ey, Ez.

#110 would resolve this issue. However, I think #110 might be a bit more work, and this issue could be resolve more easily with a few tweaks.

[prisae]

Since #121, CC, Fx, Fy, Fz, E, Ex, Ey, and Ez are implemented.

N, F, and E are missing, but these do require #110. So I close this issue.