Go 1.11 support.

circle.yml

@@ -6,7 +6,7 @@ machine:
 
 dependencies:
   pre:
-    - cd /usr/local && sudo rm -rf go && curl https://storage.googleapis.com/golang/go1.10.1.linux-amd64.tar.gz | sudo tar -xz && sudo chmod a+w go/src/path/filepath
+    - cd /usr/local && sudo rm -rf go && curl https://storage.googleapis.com/golang/go1.11.linux-amd64.tar.gz | sudo tar -xz && sudo chmod a+w go/src/path/filepath
   post:
     - mv ./gopherjs $HOME/bin
     - npm install --global node-gyp

compiler/compiler.go

@@ -17,7 +17,7 @@ import (
 
 var sizes32 = &types.StdSizes{WordSize: 4, MaxAlign: 8}
 var reservedKeywords = make(map[string]bool)
-var _ = ___GOPHERJS_REQUIRES_GO_VERSION_1_10___ // Compile error on other Go versions, because they're not supported.
+var _ = ___GOPHERJS_REQUIRES_GO_VERSION_1_11___ // Compile error on other Go versions, because they're not supported.
 
 func init() {
 	for _, keyword := range []string{"abstract", "arguments", "boolean", "break", "byte", "case", "catch", "char", "class", "const", "continue", "debugger", "default", "delete", "do", "double", "else", "enum", "eval", "export", "extends", "false", "final", "finally", "float", "for", "function", "goto", "if", "implements", "import", "in", "instanceof", "int", "interface", "let", "long", "native", "new", "null", "package", "private", "protected", "public", "return", "short", "static", "super", "switch", "synchronized", "this", "throw", "throws", "transient", "true", "try", "typeof", "undefined", "var", "void", "volatile", "while", "with", "yield"} {