Bump version and introduce version file

CHANGELOG

@@ -1,3 +1,9 @@
+Version 2.2.5
+
+10-August-2021
+
+- FIX: handle HEIC/HEIF rotation angle
+
 Version 2.2.4
 
 02-June-2021

fastimage.gemspec

@@ -1,6 +1,8 @@
+require_relative "lib/fastimage/version"
+
 Gem::Specification.new do |s|
   s.name = %q{fastimage}
-  s.version = "2.2.4"
+  s.version = FastImage::VERSION
 
   s.required_ruby_version = '>= 1.9.2'
   s.authors = ["Stephen Sykes"]
@@ -14,6 +16,7 @@ Gem::Specification.new do |s|
     "MIT-LICENSE",
     "README.textile",
     "lib/fastimage.rb",
+    "lib/fastimage/version.rb",
   ]
   s.homepage = %q{http://github.com/sdsykes/fastimage}
   s.rdoc_options = ["--charset=UTF-8"]

lib/fastimage.rb

@@ -61,6 +61,7 @@ require 'pathname'
 require 'zlib'
 require 'base64'
 require 'uri'
+require_relative 'fastimage/version'
 
 # see http://stackoverflow.com/questions/5208851/i/41048816#41048816
 if RUBY_VERSION < "2.2"

lib/fastimage/version.rb

@@ -0,0 +1,3 @@
+class FastImage
+  VERSION = "2.2.5"
+end