exploring-interpreters-0.3.0.0: CHANGELOG.md

# Revision history for exploring-interpreters 

## 0.2.0.0 -- 2021-03-15
* First official version. 

## 0.3.0.0 -- 2021-03-16
* Require that definitional interpreters return configurations in the Maybe monad.
  This adds support for run-time errors by returning Nothing when an errors occurs.