API for "search" in collection querying must have changed at some point

Trying to replicate the example in the README.md, I found that listing records of a collection with a search criteria is no longer working. Specifically, the following code returns all records, rather than just the ones containing "Bob":

`for row in cv.collection.get_rows(search="Bob"):
print("We estimate the value of '{}' at {}".format(row.name, row.estimated_value))`

Digging through requests in Chrome I found that the parameter name for a search query has changed from "query" to "searchQuery". I can fix this manually by changing line 325 in store.py: https://github.com/jamalex/notion-py/blob/56b7a904474619cf60c4768db435c921ca18f44f/notion/store.py#L325
to
`"searchQuery": search,`

I hope I have provided enough information for a fix. Thanks for the great work making a notion API available in Python!

Start with the README.md collection-query example and inspect line 325 of store.py, where the search parameter is assembled. Reproduce the example with search="Bob" and verify that the request uses the parameter identified in the issue and returns only matching records.

Written by the indexing model from the issue text.