Fixing to have the proper version of go-imap from foxcpp.

internal/testutil.go

@@ -0,0 +1,16 @@
+package internal
+
+type MapListSorter []interface{}
+
+func (s MapListSorter) Len() int {
+	return len(s) / 2
+}
+
+func (s MapListSorter) Less(i, j int) bool {
+	return s[i*2].(string) < s[j*2].(string)
+}
+
+func (s MapListSorter) Swap(i, j int) {
+	s[i*2], s[j*2] = s[j*2], s[i*2]
+	s[i*2+1], s[j*2+1] = s[j*2+1], s[i*2+1]
+}