additional vector read/write functions #71

[qb-0]

#71

[StarrFox]

These methods only read float vectors of size 2 or 3 and returns them in a dict with x, y, and somethings z keys. Seems very restricted and should instead allow reading of any data type and any size imo.

[qb-0]

This can be closed since read_ctype can easily replace that.