modernizes hash syntax in the rest of the project

Rakefile

@@ -5,16 +5,16 @@ require "tasks/release"
 require "railties/lib/rails/api/task"
 
 desc "Build gem files for all projects"
-task :build => "all:build"
+task build: "all:build"
 
 desc "Prepare the release"
-task :prep_release => "all:prep_release"
+task prep_release: "all:prep_release"
 
 desc "Release all gems to rubygems and create a tag"
-task :release => "all:release"
+task release: "all:release"
 
 desc "Run all tests by default"
-task :default => %w(test test:isolated)
+task default: %w(test test:isolated)
 
 %w(test test:isolated package gem).each do |task_name|
   desc "Run #{task_name} task for all projects"
@@ -40,7 +40,7 @@ task :smoke do
 end
 
 desc "Install gems for all projects."
-task :install => "all:install"
+task install: "all:install"
 
 desc "Generate documentation for the Rails framework"
 if ENV["EDGE"]
@@ -50,7 +50,7 @@ else
 end
 
 desc "Bump all versions to match RAILS_VERSION"
-task :update_versions => "all:update_versions"
+task update_versions: "all:update_versions"
 
 # We have a webhook configured in GitHub that gets invoked after pushes.
 # This hook triggers the following tasks:

ci/travis.rb

@@ -152,7 +152,7 @@ def run_bug_report_templates
     next if gem == "aj:integration" && isolated
     next if gem == "guides" && isolated
 
-    build = Build.new(gem, :isolated => isolated)
+    build = Build.new(gem, isolated: isolated)
     results[build.key] = build.run!
 
   end

tasks/release.rb

@@ -53,12 +53,12 @@
       sh cmd
     end
 
-    task :build => [:clean, gem]
-    task :install => :build do
+    task build: [:clean, gem]
+    task install: :build do
       sh "gem install --pre #{gem}"
     end
 
-    task :push => :build do
+    task push: :build do
       sh "gem push #{gem}"
 
       # When running the release task we usually run build first to check that the gem works properly.
@@ -137,10 +137,10 @@
 end
 
 namespace :all do
-  task :build           => FRAMEWORKS.map { |f| "#{f}:build"           } + ["rails:build"]
-  task :update_versions => FRAMEWORKS.map { |f| "#{f}:update_versions" } + ["rails:update_versions"]
-  task :install         => FRAMEWORKS.map { |f| "#{f}:install"         } + ["rails:install"]
-  task :push            => FRAMEWORKS.map { |f| "#{f}:push"            } + ["rails:push"]
+  task build: FRAMEWORKS.map { |f| "#{f}:build"           } + ["rails:build"]
+  task update_versions: FRAMEWORKS.map { |f| "#{f}:update_versions" } + ["rails:update_versions"]
+  task install: FRAMEWORKS.map { |f| "#{f}:install"         } + ["rails:install"]
+  task push: FRAMEWORKS.map { |f| "#{f}:push"            } + ["rails:push"]
 
   task :ensure_clean_state do
     unless `git status -s | grep -v 'RAILS_VERSION\\|CHANGELOG\\|Gemfile.lock'`.strip.empty?
@@ -173,7 +173,7 @@
     sh "git push --tags"
   end
 
-  task :prep_release => %w(ensure_clean_state build)
+  task prep_release: %w(ensure_clean_state build)
 
-  task :release => %w(ensure_clean_state build bundle commit tag push)
+  task release: %w(ensure_clean_state build bundle commit tag push)
 end