Refactor of library.

Merge pull request #5 from Erutan409/add-variable-number-of-relays

Refactor of library

Updated data types

Converted defined data types to be more explicit and to lower memory usage requirements.

Updating use of Avail library

Reflecting changes from Avail update.

README update

v1.1.1

Simple syntax update

Safety checks

Enforces safety checks to ensure the relay(s) isn't being over-driven with runaway logic.

First release.

Rewrote most of the library to be more memory conscientious and to give more control to the developer.