Lint

Signed-off-by: Nathan Stier <nathan.stier@gmail.com>
Transpile

Signed-off-by: Nathan Stier <nathan.stier@gmail.com>
Array fix by using for ... in instead of for ... of

Signed-off-by: Nathan Stier <nathan.stier@gmail.com>
Transpile

Signed-off-by: Nathan Stier <nathan.stier@gmail.com>
Documentation

Signed-off-by: Nathan Stier <nathan.stier@gmail.com>
Merge pull request #21 from LonelyRobotStudio/feature-previous-value-function-mutation

Feature previous value function mutation