1.4.3

• standard DNS server IP getter dnsIP(n) (not critical breaking change)
• WiFiServer - added begin(port) and construtor without parameters
• WiFiServer - end() stops clients managed by the server (it doesn't stop accepted clients, only the clients registered for available())
• WiFiServer.h - fix ambiguous begin() parameter sets
• WiFiServer - call end() as first in begin()
• WiFiClient.h - all TCP state constants for source compatibility with other libraries