0.2.0

fix!: Add the many2one in update form

Originally, the many2one were not added to the update form because of
my single usecase. However it absolutely makes sense to be able to
modify the many2one relationships.

To keep the original behiaviour, you can use the except_columns
kwarg and add each of the _id ending fields.

BREAKING CHANGE: Now you have the many2one by default in the update
form.

Refs: #3