Remove the broken and redundant Dop.basic (#185)
Remove the broken and redundant Dop.basic (#185)

This:

* Raises NameError, because `true` should be spelt `True`
* If fixed, raises `AttributeError` for `ga.pdx`
* Is attempting to set `ga.lgrad` as a weird alias of `ga.grad`
* Is just a weird way to spell `ga.grads()`
arsenovic/galgebra,arsenovic/galgebra