* Hallacy/pickleable exceptions (#109)

* Exceptions in python are hard to pickle.  Make Exceptions pickleable

* Remove debug

* Added tests

* nit

* Change embeddings call to openai.Embedding.create (#110)

* Change embeddings call to openai.Embedding.create

* And update model names

* Untweak notebook

* Support encoded embeddings response (#111)

* Support encoded embeddings response

* Removed imports

* Add a couple of comments

* Typo

* Remove CA bundle (#112)

* Remove CA bundle

* Removed some references