Log Message:
Updated p5-Net-IDN-Encode to 2.303.

2.303 (2016-12-10)
	- FIXES: warnings when compiling lib/Net/IDN/Punycode.xs
	  (reported/patch provided by paul@c***-***.org)

2.302 (2016-12-07)
	- Fixes memory bug introduced by fix for #118924

2.301 (2016-12-03)
	- FIXES: #118924: encode_punycode heap overflow
	  (reported by Alexander Bluhm)