TxnGroup.submit should raise an error if any of the signed_transactions is None

[fergalwalsh]

tinyman-py-sdk/tinyman/utils.py

Line 108 in 40ca553

def submit(self, algod, wait=False):

If any of the elements of signed_transactions is None we should raise an error to inform the user that not all transactions have been signed.

The same applies to client.submit:

tinyman-py-sdk/tinyman/v1/client.py

Line 30 in 40ca553

def submit(self, transaction_group, wait=False):