Updates for release 0.3.3, which basically rolls back to 0.3.1 and ad…

…ds back support for Ruby >= 2.6.

This version uses `#to_json` and retains the behavior that ActiveSupport may override the `#to_json` behavior in some cases.

For #2

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ['3.0', 3.1, 3.2, ruby-head, jruby]
+        ruby: [2.6, 2.7, '3.0', 3.1, 3.2, ruby-head, jruby]
     steps:
       - name: Clone repository
         uses: actions/checkout@v3

Gemfile

@@ -6,7 +6,6 @@ group :development, :test do
   gem 'simplecov-lcov', '~> 0.8',  platforms: :mri
   gem 'benchmark-ips'
   gem 'rake'
-  gem 'activesupport'
 end
 
 group :debug do

VERSION

@@ -1 +1 @@
-1.0.0
+0.3.3

json-canonicalization.gemspec

@@ -23,7 +23,7 @@ Gem::Specification.new do |gem|
   gem.files                 = %w(AUTHORS README.md LICENSE VERSION) + Dir.glob('lib/**/*.rb')
   gem.test_files            = Dir.glob('spec/**/*.rb') + Dir.glob('spec/**/*.json')
 
-  gem.required_ruby_version = '>= 3.0'
+  gem.required_ruby_version = '>= 2.6'
   gem.requirements          = []
   gem.add_development_dependency 'rspec',           '~> 3.12'
   gem.add_development_dependency 'yard' ,           '~> 0.9'

lib/json/canonicalization.rb

@@ -15,7 +15,7 @@ class Object
   # Default canonicalization output for Ruby objects
   # @return [String]
   def to_json_c14n
-    ::JSON.generate(self)
+    self.to_json
   end
 end
 
@@ -86,14 +86,14 @@ class String
   # Output JSON with control characters escaped
   # @return [String]
   def to_json_c14n
-    ::JSON.generate(self)
+    self.to_json
   end
 end
 
 class Symbol
   # Output JSON with control characters escaped
   # @return [String]
   def to_json_c14n
-    ::JSON.generate(self)
+    self.to_json
   end
 end

spec/spec_helper.rb

@@ -2,8 +2,6 @@
 
 require "bundler/setup"
 require 'rspec'
-require 'active_support'
-require 'active_support/core_ext'
 
 begin
   require 'simplecov'