* Implement future type filter
* Filter weeklys test
* Fix for test, contracts were being filtered out by new type filter
* Share core contract filtering logic in new base class
* Catch Future symbols we don't have Expiry functions for
* Expand tests for new filtering
* Address review
* Small doc change
* Compare Date component for expiry
* Clarifying comment
Colton Sellers
9dca43bccb