CHANGELOG.md: init (add v0.1.0 and v0.2.0)

CHANGELOG.md

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+# Changelog
+
+## v0.2.0
+
+### Highlights
+*   Refactor to use Bash + coreutil guided by BATS test cases.
+
+### Fixes
+*   Fix the `README.md` typo about the missing double-quote (`"`)
+    in the `git config` setting, and the table about the default configuration on Windows.
+
+### Enhancements
+*   Remove the `sed` and `grep` dependencies.
+
+*   Add test cases using [BATS](https://github.com/bats-core/bats-core)
+
+*   Support Bash version 3, 4 and 5
+
+### Backward incompatibilities
+*   The order of `$REMOTE` and `$LOCAL` is now NOT reversed inside the program.
+
+    The `git config difftool.lvcompare.cmd` and `git config mergetool.lvmerge.cmd`
+    needs to be change accordingly.
+
+    Even if the above manual change is not made,
+    this should only affects the order of the files compared.
+
+### Release status
+*   v0.2.0-beta20220603: Passed the current test cases, but have not been tested on a real setup.
+
+## v0.1.0
+
+### Highlights
+*   Initialize the project.
+
+*   Test the windows part against a Windows 10 VM with LabVIEW installed.
+
+*   The posix part is not tested yet.