* Reset all handlers. This allowing to use same server few times during app life.
E.g. for WiFi manager when hardware sepups WiFi connection and as HTTP server during hardware life cycle
* New - server.rewirte() to rewrite the request url with optional get parameters injection.
New - rewrite.setFilter() and handler.setFilter() to specify a filter callback for more control on when to include them.
New - static file handler can be set with Last-Modified header value to support Not-Modified (304) response instead of serving the actual file.
* Remove clearRewrites & clearHandlers from server.mplement server distractor to delete internal members. Fixed and improved gzip stats calculation.
* This handler will serve a 302 response to a client request for a SPIFFS file if the request comes from the STA side of the ESP network.
If the request comes from the AP side then it serves the file from SPIFFS.
* corrections. plus readme
* Update README.md
extra space
* move wifi to cpp
* Prevent buffer overflow on received data
* pass to 7 char to avoid save to flash by SDK
* return _contentLength, avoid array reparse to know len
* Added FlashStringHelper for text and binary
* Added FlashStringHelper also to AsyncWebSocketClient
* Added PROGMEM doc
* Corrected binary was sending PSTR as text, addded len
* Server calls client method and code as asked @me-no-dev
* server calls client method and code as asked by @me-no-dev
* Changed Code presentation
* Added printf_P methods
* Prevent buffer overflow on received data
* pass to 7 char to avoid save to flash by SDK
* return _contentLength, avoid array reparse to know len
* Added FlashStringHelper for text and binary
* Added FlashStringHelper also to AsyncWebSocketClient
* Added PROGMEM doc
* Corrected binary was sending PSTR as text, addded len
* Server calls client method and code as asked @me-no-dev
* server calls client method and code as asked by @me-no-dev
* Changed Code presentation