Standardize the changelog headers.

Author: Jeff Verkoeyen

CHANGELOG.md

@@ -1,63 +1,63 @@
-## 3.0.5
+# 3.0.5
 
 * Resolved bug where coverage information was being lost for the last file in a coverage report.
 
-## 3.0.4
+# 3.0.4
 
 * Resolved [issue #3](https://github.com/google/arc-xcode-test-engine/issues/3): Using test engine with Quick testing library gets "Unable to parse line" error. Thanks to [KevM](https://github.com/KevM) for fixing.
 
-## 3.0.3
+# 3.0.3
 
 * Resolved coverage failure with Xcode 7.3 and newer. Thanks to [aelam](https://github.com/aelam) for filing [#2](https://github.com/google/arc-xcode-test-engine/issues/2).
 
-## 3.0.2
+# 3.0.2
 
 * Resolves crash caused by referencing the wrong stderr variable. The error was
   `Attempt to read from undeclared property XcodeUnitTestEngine::stderr`.
 
-## 3.0.1
+# 3.0.1
 
 * If tests fail to build we no longer generate a
   `Unhandled Exception ("PhutilTypeMissingParametersException")` exception on Phabricator. We were
   not previously providing a name to the ArcanistUnitTestResult instance.
 
-## 3.0.0
+# 3.0.0
 
 * Commands now always run from the root directory of the project rather than from the shell's
   current working directory. This may be a breaking change.
 
-## 2.1.1
+# 2.1.1
 
 * Improved overall test parsing time by approximately 50%.
 
-## 2.1.0
+# 2.1.0
 
 * Added a `pre-build` configuration option.
 
-## 2.0.2
+# 2.0.2
 
 * Error line detection is now more flexible. Any output line with "error:" will be detected and
   bubble up as an error.
 
-## 2.0.1
+# 2.0.1
 
 * Better handling of non-unit-test failures, such as CocoaPods getting out of sync.
 
-## 2.0.0
+# 2.0.0
 
 * Coverage is now enabled and **reported** unless explicitly disabled with --no-coverage.
 * xcodebuild or llvm-cov failures now properly throw exceptions rather than silently continuing.
 
-## 1.1.0
+# 1.1.0
 
 * Coverage is now enabled unless explicitly disabled with --no-coverage.
 
-## 1.0.1
+# 1.0.1
 
 * Don't run unit tests if no files were provided to the engine and we're not being asked
   to run all tests.
 
-## 1.0.0
+# 1.0.0
 
 * Initial release.
 * Provides `arc unit` and `arc unit --coverage` support for a single xcode project/target