Add the other eTrade tax strategies that could have been selected

[hickeng]

I started the sheet with pro-rata, then added an optimizer to try for the MT strategy. During some discussion, someone mentioned about FIFO and it prompted me to realize that there's an entire set of strategies that could have been selected in eTrade account preferences.

This issue is to add a comparator to allow use of whichever strategy was active, given that was the only way to communicate with eTrade the intent for handling:

• FIFO
• LIFO
• LOFO
• HIFO
• MT