Simple encrypted auth tokens for Phoenix Solution to Challenge 12: Making bitmaps with color palettes

Automate pattern matching for structs

Blogged an example of how one might use macros to automate pattern matching on different structs.

Shameless plug: Check out @elixirstatus' other community project:

Credo, a new static code analysis tool that acts as a code linter, but also focusses on teaching coding practices and code consistency.