Fix devtools API & external gem changes

* Followup with devtools 0.1.3 that fixes some behavior to be more strict
* Followup with ast-0.2.2 that changes #inspect

config/devtools.yml

@@ -1,2 +1,2 @@
 ---
-unit_test_timeout: 10
+unit_test_timeout: 10.0

mutant.gemspec

@@ -25,7 +25,7 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency('ast',           '~> 2.1')
   gem.add_runtime_dependency('diff-lcs',      '~> 1.2')
   gem.add_runtime_dependency('parallel',      '~> 1.3')
-  gem.add_runtime_dependency('morpher',       '~> 0.2.5')
+  gem.add_runtime_dependency('morpher',       '~> 0.2.6')
   gem.add_runtime_dependency('procto',        '~> 0.0.2')
   gem.add_runtime_dependency('abstract_type', '~> 0.0.7')
   gem.add_runtime_dependency('unparser',      '~> 0.2.4')
@@ -36,7 +36,7 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency('anima',         '~> 0.3.0')
   gem.add_runtime_dependency('concord',       '~> 0.1.5')
 
-  gem.add_development_dependency('devtools', '~> 0.1.1')
+  gem.add_development_dependency('devtools', '~> 0.1.3')
   gem.add_development_dependency('bundler',  '~> 1.10')
   gem.add_development_dependency('ffi',      '~> 1.9.6')
 end

spec/spec_helper.rb

@@ -26,7 +26,6 @@ require 'devtools/spec_helper'
 require 'unparser/cli'
 require 'mutant'
 require 'mutant/meta'
-Devtools.init_spec_helper
 
 $LOAD_PATH << File.join(TestApp.root, 'lib')
 

spec/unit/mutant/reporter/cli/printer/mutation_result_spec.rb

@@ -50,11 +50,11 @@ RSpec.describe Mutant::Reporter::CLI::Printer::MutationResult do
             Original unparsed source:
             super
             Original AST:
-            (lvar :super)
+            s(:lvar, :super)
             Mutated unparsed source:
             super
             Mutated AST:
-            (zsuper)
+            s(:zsuper)
             -----------------------
           REPORT
         end
@@ -73,7 +73,7 @@ RSpec.describe Mutant::Reporter::CLI::Printer::MutationResult do
           Original code was inserted unmutated. And the test did NOT PASS.
           Your tests do not pass initially or you found a bug in mutant / unparser.
           Subject AST:
-          (true)
+          s(:true)
           Unparsed Source:
           true
           Test Result: