Merge Dev v0.3 to master (#11)

* Add boards.greenhouse.io to whitelist

* Bump version to v0.3

* Set change date + number of blocked domains as of Dec 22, 2022

* Reformat/beautify README.md and help info in import_lists.sh

* Reformat/beautify README.md and help info in import_lists.sh

* Reformat/beautify README.md

* Added pointers to relevant BSI documents to README.md

* Added pointers to relevant BSI documents to README.md

* Added pointers to relevant BSI documents to README.md

* Added pointers to relevant BSI documents to README.md

* Added pointers to relevant BSI documents to README.md

* Added pointers to relevant BSI documents to README.md

* Further improvement of the documentation in README.md

* Revert "Bump version to v0.3"

This reverts commit a923ca9.

* Fixed problems when refresh_all.sh is executed in cron job and /bin/sh is a symlink to /usr/bin/dash

* Bump code version to v0.3

import_lists.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/bash
 
-MY_VERSION='v0.2'
+MY_VERSION='v0.3'
 MY_YEAR='2022'
 BANNER="$(basename $0) $MY_VERSION (c) $MY_YEAR Peter Schneider, provided under MIT License"