Deprecate infer_schema!

`diesel print-schema` is now the preferred way to generate schema.rs.

Author: sgrif

diesel_infer_schema/src/lib.rs

@@ -9,6 +9,8 @@
             warn(wrong_pub_self_convention, mut_mut, non_ascii_literal, similar_names,
                  unicode_not_nfc, if_not_else, items_after_statements, used_underscore_binding))]
 
+#![deprecated(since = "1.3.0", note = "Diesel CLI can be configured to automatically run `print-schema` after running migrations. See diesel.rs/guides/configuring-diesel-cli for details.")]
+
 #[cfg_attr(feature = "clippy", allow(useless_attribute))]
 #[allow(unused_imports)]
 #[macro_use]

diesel_tests/tests/lib.rs

@@ -6,6 +6,7 @@ extern crate assert_matches;
 #[macro_use]
 extern crate diesel;
 #[macro_use]
+#[allow(deprecated)]
 extern crate diesel_infer_schema;
 #[cfg(feature = "sqlite")]
 #[macro_use]