Restore `development_pod_targets` public method in installer

CHANGELOG.md

@@ -12,8 +12,9 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
 
 ##### Bug Fixes
 
-* None.  
-
+* Restore `development_pod_targets` public method in installer  
+  [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
+  [#7292](https://github.com/CocoaPods/CocoaPods/pull/7292)
 
 ## 1.4.0.rc.1 (2017-12-16)
 

lib/cocoapods/installer.rb

@@ -644,6 +644,19 @@ module Pod
 
     #-------------------------------------------------------------------------#
 
+    public
+
+    # @return [Array<PodTarget>] The targets of the development pods generated by
+    #         the installation process. This can be used as a convenience method for external scripts.
+    #
+    def development_pod_targets
+      pod_targets.select do |pod_target|
+        sandbox.development_pods.keys.include?(pod_target.pod_name)
+      end
+    end
+
+    #-------------------------------------------------------------------------#
+
     private
 
     # @!group Private helpers