kyrylogy

required for clean installation

I've been using the [get_feed_posts](https://github.com/tomquirk/linkedin-api/blob/613b3de2fc54eef4d5b6801b785a28537dcb7276/linkedin_api/linkedin.py#L1409) method for some time and noticed a few bugs with the **exclude_promoted_posts** parameter. In this PR I will refactor the method to work as expected:...