Bump version to 0.13.1

Signed-off-by: Victor <victor.porof@gmail.com>

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "lmdb-rkv"
 # NB: When modifying, also modify html_root_url in lib.rs
-version = "0.13.0"
+version = "0.13.1"
 authors = ["Dan Burkert <dan@danburkert.com>", "Victor Porof <vporof@mozilla.com>"]
 license = "Apache-2.0"
 description = "Idiomatic and safe LMDB wrapper."

src/lib.rs

@@ -2,7 +2,7 @@
 //! [Lightning Memory-mapped Database (LMDB)](https://symas.com/lmdb).
 
 #![deny(missing_docs)]
-#![doc(html_root_url = "https://docs.rs/lmdb-rkv/0.13.0")]
+#![doc(html_root_url = "https://docs.rs/lmdb-rkv/0.13.1")]
 
 extern crate byteorder;
 extern crate libc;