Change support of Elixir to "~> 1.11"

Author: philss

CHANGELOG.md

@@ -6,7 +6,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-### Added
+### Security
 
 - Add checksum verification of precompiled NIF files before extracting
 them to the correct location. This is to avoid supply chain attacks.
@@ -16,6 +16,11 @@ the user can download only the local NIF file with the checksum.
 See the `RELEASE_CHECKLIST.md` file for details on how we ensure this
 works correctly.
 
+### Removed
+
+- Remove support for Elixir 1.10 and below. This is to keep a policy of
+supporting the latest three Elixir versions.
+
 ### Changed
 
 - Switch from thread pool to being a dirty NIF. This prevents the 

mix.exs

@@ -8,10 +8,9 @@ defmodule Html5ever.Mixfile do
     [
       app: :html5ever,
       version: @version,
-      elixir: "~> 1.4",
+      elixir: "~> 1.11",
       build_embedded: Mix.env() == :prod,
       start_permanent: Mix.env() == :prod,
-      compilers: Mix.compilers(),
       deps: deps(),
       docs: docs(),
       description: "NIF binding of html5ever using Rustler",