drop support for Go 1.6

.travis.yml

@@ -10,7 +10,6 @@ services:
   - docker
 
 go:
-  - 1.6.4
   - 1.7.5
   - 1.8
 

README.md

@@ -68,7 +68,3 @@ http.Client{
   Transport: &h2quic.QuicRoundTripper{},
 }
 ```
-
-## Building on Windows
-
-Due to the low Windows timer resolution (see [StackOverflow question](http://stackoverflow.com/questions/37706834/high-resolution-timers-millisecond-precision-in-go-on-windows)) available with Go 1.6.x, some optimizations might not work when compiled with this version of the compiler. Please use Go 1.7 on Windows.

h2quic/client.go

@@ -239,7 +239,7 @@ func (c *Client) Do(req *http.Request) (*http.Response, error) {
 			res.Header.Del("Content-Length")
 			res.ContentLength = -1
 			res.Body = &gzipReader{body: res.Body}
-			setUncompressed(res)
+			res.Uncompressed = true
 		}
 	}
 

h2quic/response_setuncompressed.go

@@ -1,9 +0,0 @@
-// +build go1.7
-
-package h2quic
-
-import "net/http"
-
-func setUncompressed(res *http.Response) {
-	res.Uncompressed = true
-}

h2quic/response_setuncompressed_go16.go

@@ -1,9 +0,0 @@
-// +build !go1.7
-
-package h2quic
-
-import "net/http"
-
-func setUncompressed(res *http.Response) {
-	// http.Response.Uncompressed was introduced in go 1.7
-}