* Upcoming EspSoftwareSerial 7.0.1
* EspSoftwareSerial example: higher bitrates due to forcing half-duplex
* Adapt to SoftwareSerial's latest use of namespace.
* In EspSoftwareSerial, some renaming after review feedback.
* EspSoftwareSerial's use of a template class in order to permit users their own GPIO capabilities definitions.
* CI caught some warning.
* Stick to non-namespace EspSoftwareSerial class name for the moment.
* Delegate operator() is now nullptr-safe, good for use in ISRs.
* Pushed EspSoftwareSerial 8.0.1: Platformio picks up versions that aren't published in Github
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