Loosen Bundler dependency for theme gem

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 - Add missing Chinese text strings. [#2072](https://github.com/mmistakes/minimal-mistakes/pull/2072)
 
+### Bug Fixes
+
+- Loosen Bundler dependency in ruby gem.
+
 ## [4.15.2](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.15.2)
 
 ### Enhancements

docs/_docs/18-history.md

@@ -5,7 +5,7 @@ permalink: /docs/history/
 excerpt: "Change log of enhancements and bug fixes made to the theme."
 sidebar:
   nav: docs
-last_modified_at: 2019-03-03T19:03:35-05:00
+last_modified_at: 2019-03-04T16:54:24-05:00
 toc: false
 ---
 
@@ -15,6 +15,10 @@ toc: false
 
 - Add missing Chinese text strings. [#2072](https://github.com/mmistakes/minimal-mistakes/pull/2072)
 
+### Bug Fixes
+
+- Loosen Bundler dependency in ruby gem.
+
 ## [4.15.2](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.15.2)
 
 ### Enhancements

minimal-mistakes-jekyll.gemspec

@@ -24,6 +24,6 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency "jemoji", "~> 0.10"
   spec.add_runtime_dependency "jekyll-include-cache", "~> 0.1"
 
-  spec.add_development_dependency "bundler", "~> 1.15"
+  spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake", "~> 10.0"
 end