require date which is used in parsing pngout version, fixes toy/image…

…_optim_pack#14
toy · Dec 14, 2017 · bc529e9 · bc529e9
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diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
@@ -2,6 +2,8 @@
 
 ## unreleased
 
+* Require `'date'` which is used in parsing pngout version [toy/image_optim_pack#14](https://github.com/toy/image_optim_pack/issues/14) [@toy](https://github.com/toy)
+
 ## v0.26.0 (2017-11-13)
 
 * Enable `jpegrescan` by default after removing its dependency on `File::Slurp` and fixing for windows [#153](https://github.com/toy/image_optim/issues/153) [@toy](https://github.com/toy)

diff --git a/lib/image_optim/bin_resolver/bin.rb b/lib/image_optim/bin_resolver/bin.rb
@@ -5,6 +5,7 @@
 require 'image_optim/path'
 require 'shellwords'
 require 'digest/sha1'
+require 'date'
 
 class ImageOptim
   class BinResolver