FEATURE: we explicitly only support Ruby 2.3 and up

- remove 2.2 from travis
- be explicit in gemspec
- add note to readme

.travis.yml

@@ -1,9 +1,9 @@
 language: ruby
 rvm:
-  - 2.2
   - 2.3
   - 2.4
   - 2.5
+  - master
 matrix:
   include:
     - rvm: 2.5.1
@@ -19,5 +19,5 @@ dist: trusty
 sudo: true
 before_install:
   - gem update --system
-  - gem install bundler -v 1.12.0
+  - gem install bundler -v 1.16.2
 cache: bundler

CHANGELOG

@@ -1,6 +1,9 @@
 - Unreleased
 
-  - Deprecate Isolate#idle_notification in favour of Isolate#idle_notification_deadline @ignisf
+  - FEATURE: context#call to allow for cheaper invocation of functions
+  - FIX: rare memory leak when terminating a long running attached function
+  - FIX: rare segfault when terminating a long running attached function
+  - FIX: Reimplement Isolate#idle_notification using idle_notification_deadline, API remains the same @ignisf
   - Account for changes in the upstream V8 API @ignisf
   - Bump dependency of V8 to 6.7
 

README.md

@@ -10,6 +10,12 @@ It was created as an alternative to the excellent [therubyracer](https://github.
 
 MiniRacer has an adapter for [execjs](https://github.com/rails/execjs) so it can be used directly with Rails projects to minify assets, run babel or compile CoffeeScript.
 
+### A note about Ruby version Support
+
+MiniRacer only supports non-EOL versions of Ruby. See [Ruby](https://www.ruby-lang.org/en/downloads) to see the list of non-EOL Rubies.
+
+If you require support for older versions of Ruby install an older version of the gem.
+
 ## Features
 
 ### Simple eval for JavaScript

mini_racer.gemspec

@@ -30,5 +30,5 @@ Gem::Specification.new do |spec|
 
   spec.extensions = ["ext/mini_racer_extension/extconf.rb"]
 
-  spec.required_ruby_version = '>= 2.0'
+  spec.required_ruby_version = '>= 2.3'
 end