Evaluate Package "excalibur"

[h4cc]

Evaluate "excalibur" to see if it's awesome, and possibly include in the list.

Link: https://hex.pm/packages/excalibur

Description: A modern Elixir utility library delivering modularity, performance & extras.

This is a autogenerated issue, because the packages was added on hex.pm.

[seanwash]

Seems like a mostly empty package.