Modify FYI Notifications

Many FYI endpoints reference a "typecode" value. The table below lists the available codes and what they correspond to. * `BA` - Borrow Availability * `CA` - Comparable Algo * `DA` - Dividends Advisory * `EA` - Upcoming Earnings * `MF` - Mutual Fund Advisory * `OE` - Option Expiration * `PR` - Portfolio Builder Rebalance * `SE` - Suspend Order on Economic Event * `SG` - Short Term Gain turning Long Term * `SM` - System Messages * `T2` - Assignment Realizing Long-Term Gains * `TO` - Takeover * `UA` - User Alert * `M8` - M871 Trades * `PS` - Platform Use Suggestions * `DL` - Unexercised Option Loss Prevention Reminder * `PT` - Position Transfer * `CB` - Missing Cost Basis * `MS` - Milestones * `TD` - MiFID || 10% Deprecation Notice * `ST` - Save Taxes * `TI` - Trade Idea * `CT` - Cash Transfer