Add option to have today at top

[skjiisa]

Currently today is at the bottom and you scroll up to see the past. Adding an option to invert that so today is at the top and scrolling down shows the past could be nice.

[skjiisa]

There could potentially be an environment object that would contain a bunch of formatting info for everything to read off of. Ideas for items to include:

• Today at top or bottom
• Number of days to render
• Spacing and padding
• Sizing
• Widget display mode (could be encompassed by spacing, padding, and sizing info)

[skjiisa]

If this is trivial to implement with the UI redesign, it can be included in v1.3, but this will probably get pushed back to v1.4.