Update dependency ava to version 0.18.2

[renovate-bot]

This Pull Request updates dependency ava from version 0.18.1 to 0.18.2

Changelog

0.18.2 / 2017-02-18

• 0.18.2
• Speed up flow check (#1241)
  `flow check` is easily taking 30 seconds on my development machine,
  presumably it's checking too many files. Move the .flowconfig into
  the flow-types test directory and only include the index.js.flow file
  to improve check speed.
• Document that deepEqual() uses lodash.isequal
• Don't call toJSON() when formatting values
  Fixes #1233. Our assertions don't call toJSON(), so we shouldn't use
  it either when displaying actual and expected values.
• @ava/pretty-format@^1.1.0
• Ensure test run failures crash worker (#1265)
  • Ensure Test#run() returns exit promise
    This allows errors from the exit logic to propagate to the runner.
  • Treat runner errors as uncaught exceptions
    Errors that occur inside the runner are treated as uncaught exceptions.
    This prevents them from being swallowed in the promise chain, causing
    the test to hang.
  • fixup! Treat runner errors as uncaught exceptions
  • fixup! Treat runner errors as uncaught exceptions
• Code excerpt fixes (#1271)
  • Resolve absolute source file path when serializing errors
    Fixes #1270.
  • Bail excerpting code if file cannot be read
  • temp-write@^3.1.0
  • Restrict code excerpts to tests/helpers/sources
    Don't show code excerpts for dependencies or code outside the project
    directory. Determine where the source lives when serializing the error.
    Then, when excerpting the code, bail if it lives outside the project
    or is a dependency.
• Fix typo in babelrc docs
• Remove Notes section from babelrc documentation
  We no longer rewrite paths. Mentioning future uses seems unnecessary. What's left is implicitly covered elsewhere.
• Ensure watcher rethrows logger errors
  The watcher would break if logger.finish() threw an exception. Instead
  rethrow this error (which causes the process to exit).
• Simplify failure output - fixes #1072 (#1234)
• Clean up API tests (#1258)
  • Remove double space in generated API test titles
  • Improve test management in API tests
    Tests don't need to be ended when a promise is returned.
    Test plans are not necessary if all assertions occur within the returned
    promise chain. Exceptions will still fail the test.
• Generate HTML coverage reports (#1259)
  This makes it easier to inspect the code coverage during development.
• Ensure TAP reporter test does not write to stderr (#1240)
  Stub process.stderr.write(), rather than just spying on it. Otherwise
  'resultresult' gets written to the stderr while the tests run.
• Avoid helper compilation during API tests
  We're ending up compiling all helper-like files in AVA's test/
  directory, which is unnecessary.
• Clarify directories used by API (#1252)
  • Rename pkgDir to projectDir: this better communicates it's the
    directory of the user's project.
  • Remove unused cwd option from API.
  • Remove default for resolveTestsFrom. It's confusing to see
    process.cwd() in the code even though it's never actually used.
  • Ensure API test properly creates the API instances.
• Document helper precompilation caveat (in code at least) (#1251)
• Flow type definition for snapshot assertion #1245 (#1247)
• Add TypeScript definition for the snapshot assertion (#1243)
• Bump `stack-utils`
  Closes #1003.
• Fix some minor issues with #1198
• Added support for --no-color flag in verbose and mini reporters (#1198)
• Add flow type tests (#1230)
  Closes #1224.
  This adds flow-bin, adds it to the test running script, and adds some regression tests based on prior issues.
  In an immediate proof of value (and proof of my own prior sloppiness) it spotted an issue that #1219 sought to fix and did not do so. Fix included along with test.
• Show how many tests were skipped by --fail-fast (#1221)
• Add Flow and TS type definitions to "Why AVA?"
• Fix flow errors using t.throws and t.notThrows (#1219)
  Instead of double-defining each of these, define them once while using overloading.
  Also took some liberties to improve the definition. Specifically, ava doesn't care what values these throwing functions return, but doesn't produce a return value.
  Fixes #1148