Graphing of code on stock split broken

[fidoandfido]

Code should be updated to allow 'break' in line when stock splits, or some other method to indicate the stock has split and not jsut declined in value by 1/2 or whatever.

[fidoandfido]

Inserting a null value into the time series will 'break' the line. So, what should happen is if the stock splits, then at the time the stock splits there should be three values:

• The value just before it split
• null value
• The value just after it split

[fidoandfido]

Done. Graphs still look pretty 'special' but a fair bit better than before. Reasonably happy with how it has turned out.