Add limit parameter to transactions endpoint (#75)

* transaction: add limit param for transactions endpoint

* transaction: limit limit to 100

* transaction: min not max for limiting limit param

---------

Co-authored-by: tommy bowles <tommy.bowles@disguise.one>

Author: tomii-dev

monzo/endpoints/transaction.py

@@ -517,6 +517,7 @@ def fetch(
             since: Optional[datetime] = None,
             before: Optional[datetime] = None,
             expand=None,
+            limit=30
     ) -> List[Transaction]:
         """
         Fetch a list of transaction.
@@ -543,6 +544,8 @@ def fetch(
             data['since'] = format_date(since)
         if before:
             data['before'] = format_date(before)
+        if limit:
+            data['limit'] = min(limit, 100)
         path = '/transactions'
         res = auth.make_request(path=path, data=data)
         transactions = []