Version 1.6.0

New feature

• Beta-delta discount function. You can now to parameter estimation of the beta-delta function (Laibson, 1997). See #199 for details.

Moving to semantic version numbering

Previously I was just making up the version number with whatever seemed reasonable. From this point on, I'll use semantic version numbering. So version numbers will be: MAJOR.MINOR.PATCH

• where MAJOR is incremented when there's a major update or change to the API which might require you to update your code.
• where MINOR is incremented for each new additional feature
• and PATCH is incremented for each new fix