WString explicit converters to reduce Flash size (#6759)
WString explicit converters to reduce Flash size (#6759)

* WString explicit converters to reduce Flash size

* Fix add return value for start/endsWith

* Adding const to startsWith() and endsWith()

sticilface/Arduino,sticilface/Arduino,sticilface/Arduino,sticilface/Arduino,esp8266/Arduino,sticilface/Arduino,esp8266/Arduino,esp8266/Arduino,esp8266/Arduino,esp8266/Arduino