MInor release 3.10.0 with ghostl moved to stand-alone Arduino library.

Minor release due to improvements in MT (or MP=multi-producer queue)

Minor release point, Delegate's operator() is now nullptr-safe

Bump up bug fix version number.

PSTR is not defined on Linux etc.

ESP8266 Arduino Core just merged the patch for esp_suspend support. S…

…hould remove the HAVE_ESP_SUSPEND ahead of the next release, this commit prepares for that.

Overhaul of the PlatformIO manifest file.

ESP8266 WiFi persistence is off by default in recent revisions, examp…

…les should match that by including SSID and PSK setup.

Strings in flash memory reviewed.

Bug fix release 3.6.2: serial bit rate typo in example.

IRAM attribute; small refactoring; runnableTasks array must be 1 elem…

…ent larger than max task #