minor version bump (small perf opts)

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "brotli"
-version = "3.1.1"
+version = "3.1.2"
 authors = ["Daniel Reiter Horn <danielrh@dropbox.com>", "The Brotli Authors"]
 description = "A brotli compressor and decompressor that with an interface avoiding the rust stdlib. This makes it suitable for embedded devices and kernels. It is designed with a pluggable allocator so that the standard lib's allocator may be employed. The default build also includes a stdlib allocator and stream interface. Disable this with --features=no-stdlib. All included code is safe."
 license = "BSD-3-Clause/MIT"