use a single **ThreadSafe** module (previously Threadsafe::VERSION used)

Author: kares

lib/thread_safe/version.rb

@@ -1,3 +1,21 @@
-module Threadsafe
+module ThreadSafe
   VERSION = "0.2.0"
 end
+
+# NOTE: <= 0.2.0 used Threadsafe::VERSION
+# @private
+module Threadsafe
+
+  # @private
+  def self.const_missing(name)
+    name = name.to_sym
+    if ThreadSafe.const_defined?(name)
+      warn "[DEPRECATION] `Threadsafe::#{name}' is deprecated, use `ThreadSafe::#{name}' instead."
+      ThreadSafe.const_get(name)
+    else
+      warn "[DEPRECATION] the `Threadsafe' module is deprecated, please use `ThreadSafe` instead."
+      super
+    end
+  end
+
+end

thread_safe.gemspec

@@ -16,7 +16,7 @@ Gem::Specification.new do |gem|
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.name          = "thread_safe"
   gem.require_paths = ["lib"]
-  gem.version       = Threadsafe::VERSION
+  gem.version       = ThreadSafe::VERSION
   gem.license       = "Apache-2.0"
 
   gem.add_dependency 'atomic', ['>= 1.1.7', '< 2']