Add support with Go language.

sources_non_forked/vim-go/gosnippets/minisnip/_go_eq

@@ -0,0 +1,3 @@
+if !reflect.DeepEqual({{+got+}}, {{+want+}}) {
+	t.Errorf("\ngot:  %#v\nwant: %#v\n", {{+~\~2+}}, {{+~\~2+}})	
+}

sources_non_forked/vim-go/gosnippets/minisnip/_go_err

@@ -0,0 +1,3 @@
+if err != nil {
+	return {{+err+}}
+}

sources_non_forked/vim-go/gosnippets/minisnip/_go_errt

@@ -0,0 +1,4 @@
+if err != nil {
+	t.Fatal(err)
+}
+{{++}}

sources_non_forked/vim-go/gosnippets/minisnip/_go_errw

@@ -0,0 +1,3 @@
+if err != nil {
+	return errors.Wrap(err, "{{++}}")
+}

sources_non_forked/vim-go/gosnippets/minisnip/_go_f

@@ -0,0 +1,3 @@
+// {{++}}
+func {{+~\~1+}}() {
+}

sources_non_forked/vim-go/gosnippets/minisnip/_go_ff

@@ -0,0 +1 @@
+fmt.Printf("%#v\n", {{++}})

sources_non_forked/vim-go/gosnippets/minisnip/_go_fori

@@ -0,0 +1,3 @@
+for i := 0; i < {{++}}; i++ {
+	{{++}}
+}

sources_non_forked/vim-go/gosnippets/minisnip/_go_pkg

@@ -0,0 +1,2 @@
+// Package {{+~expand('%:p:h:t')+}} {{++}}
+package {{+~\~2+}}

sources_non_forked/vim-go/gosnippets/minisnip/_go_sp

@@ -0,0 +1,2 @@
+fmt.Sprintf("{{++}}", {{++}})
+

sources_non_forked/vim-go/gosnippets/minisnip/_go_tt

@@ -0,0 +1,17 @@
+var tests = []struct {
+	name string
+	expected string
+	given string
+}{
+	{"", "", "",},
+}
+for _, tt := range tests {
+	tt := tt
+	t.Run(tt.name, func(t *testing.T){
+		actual := {{++}}(tt.given)
+		if actual != tt.expected {
+				t.Errorf("{{+~\~1+}}(%s): expected %s, actual %s", tt.given, tt.expected, actual)
+		}
+
+	})
+}