Tests

Update CHANGELOG and bump version to 5.3.8 (#497) #421

Job	Run time
lint	27s
test (2.1, gems/rails3.gemfile)	21s
test (2.2)	26s
test (2.3)	23s
test (2.4)	25s
test (2.5)	22s
test (2.6)	23s
test (2.6, gems/typhoeus.gemfile, typhoeus)	24s
test (2.6, gems/octoshark.gemfile)	27s
test (2.6, gems/rails3.gemfile, 1.17.3)	23s
test (2.7)	27s
test (2.7, true)	23s
test (3.0)	11s
test (3.0, true)	9s
test (3.0, gems/instruments.gemfile, instruments)	11s
test (3.0, gems/instruments.gemfile, true, instruments)	15s
test (3.0, gems/sidekiq.gemfile, sidekiq_install)	9s
test (3.1)	12s
test (3.2)	10s
	6m 8s

Provide feedback