Log Message:
Update p5-Starlet to 0.13.

Changes from previous:
0.13
	- test compatibilty improvement: ignore proxy setting while running tests (datamuc)

0.12
	- [bugfix] fix infinite loop when connection is closed while receiving
	  response content (thanks to Jiro Nishiguchi-san)

0.11
	- suppress the warning "Use of "goto" to jump into a construct \ 
is deprecated"