Upgrade to EHPTlib 3.0.0

This release now uses 3.0.0. version of EHTPlib. See its description for details.

Moreover, it has the new SHEV model OO_noMap.
The library tutorial has been substantially upgraded, and its size has grown from 78 pages to 124.

First public release of the library

This is the first public release of the library.
It contains examples of usage of the library EHTPlib, and uses the same version number of it.