Download PDFs via http instead of ssh

This release changes the way PDFs are downloaded from the file server and uses http instead of ssh.

More parameters to control papers to load

Added parameters to exclude certain pap_types and to exclude a specified list of paper ids.

More paper info and refined NLP functions

v1.0.2

fix(similarity_query): new param to set max num of results

Bibliographic data added to paper objects

Paper objects now have bibliographic information loaded from WormBase DB