testthat 0.10.0

• Failure locations are now formated as R error locations.
• Deprecated library_if_available() has been removed.
• test (test_dir(), test_file(), test_package(), test_check()) functions
  now return a testthat_results object that contains all results, and can be
  printed or converted to data frame.
• test_dir(), test_package(), and test_check() have an added ...
  argument that allows filtering of test files using, e.g., Perl-style regular
  expressions,or fixed character filtering. Arguments in ... are passed to
  grepl() (@leeper).
• test_check() uses a new reporter specifically designed for R CMD check.
  It displays a summary at the end of the tests, designed to be <13 lines long
  so test failures in R CMD check display something more useful. This will
  hopefully stop BDR from calling testthat a "test obfuscation suite" (#201).
• compare() is now documented and exported. Added a numeric method so when
  long numeric vectors don't match you'll see some examples of where the
  problem is (#177). The line spacing in compare.character() was
  tweaked.
• skip_if_not_installed() skips tests if a package isn't installed (#192).
• expect_that(a, equals(b)) style of testing has been soft-deprecated.
  It will keep working, but it's no longer demonstrated any where, and new
  expectations will only be available in expect_equal(a, b) style. (#172)
• Once again, testthat suppresses messages and warnings in tests (#189)
• New test_examples() lets you run package examples as tests. Each example
  counts as one expectation and it succeeds if the code runs without errors
  (#204).
• New succeed() expectation always succeeds.
• skip_on_travis() allows you to skip tests when run on Travis CI.
  (Thanks to @mllg)
• colourise() was removed. (Colour is still supported, via the crayon
  package.)
• Mocks can now access values local to the call of with_mock (#193, @krlmlr).
• All equality expectations are now documented together (#173); all
  matching expectations are also documented together.