Add training workflow, datasets, and runbook

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+Cotnbining Calendar 
+and Ratio Spreads 
+The previous chapters on spreading introduced the basic types of spreads. The sim­
+plest forms of bull spreads, bear spreads, or calendar spreads can often be combined 
+to produce a position with a more attractive potential. The butterfly spread, which is 
+a combination of a bull spread and a bear spread, is an example of such a combina­
+tion. The next three chapters are devoted to describing other combinations of 
+spreads, wherein the strategist not only mixes basic strategies ..:... bull, bear, and calen­
+dar - but uses varying expiration dates as well. Although they may seem overly com­
+plicated at first glance, these combinations are often employed by professionals in the 
+field. 
+RATIO CALENDAR SPREAD 
+The ratio cdendar spread is a combination of the techniques used in the calendar 
+and ratio spreads. Recall that one philosophy of the calendar spread strategy was to 
+sell the near-term call and buy a longer-term call, with both being out-of-the-money. 
+This is a bullish calendar spread. If the underlying stock never advances, the spread­
+er loses the entire amount of the relatively small debit that he paid for the spread. 
+However, if the stock advances after the near-term call expires worthless, large prof­
+its are possible. It was stated that this bullish calendar spread philosophy had a small 
+probability of attaining large profits, and that the few profits could easily exceed the 
+preponderance of small losses. 
+The ratio calendar spread is an attempt to raise the probabilities while allowing 
+for large potential profits. In the ratio calendar spread, one sells a number of near-
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