Enabling regression tests again

RELEASE TODO.md

@@ -4,7 +4,7 @@ Be sure to remember to do the following for releases. (Copy into a GitHub issue)
  - [ ] README is updated
  - [ ] Samples are updated
  - [ ] `rake doc`
- - [ ] Check that sample regression tests are all enabled
+ - [ ] Check `sample_regression_spec.rb` regression tests are all enabled (i.e. `overwrite_sample` is commented out)
  - [ ] Bump version.rb
  - [ ] Do a full rake locally
  - [ ] `rake sanity`, and check visually

spec/samples/samples_regression_spec.rb

@@ -73,7 +73,7 @@ describe "Squib samples" do
       log = StringIO.new
       mock_cairo(log)
       load sample
-      overwrite_sample(sample, log) # Use TEMPORARILY once happy with the new sample log
+      # overwrite_sample(sample, log) # Use TEMPORARILY once happy with the new sample log
       test_file_str = File.open(sample_regression_file(sample), 'r:UTF-8').read
       expect(log.string).to eq(test_file_str)
     end