Add support to plot all indicators for all symbols

Switched to yaml for simulation parameters

Add support for adjusting how far back in history the trending strategy will go

Enable better fetching for updateIndicators

Remove printout

If a instrument isn't avialable at the start, turn it's position into cash if possible

Added __str__ to postion object

Use adjclose for initial_position

Added analyze command

Fix issue due to use of Position class

Switch to using dollar value in SPY portfolio

Fix bugs dealing with dollar amounts in portfolio

The wait command isn't necessary when used with the show command

Ensure the trending strategy can use it's parameters

Added misc section