* Implement new package scanner
* Replace hardcoded repository paths in getmergebase.sh
* Create branch instead of working on detached head in getmergebase.sh
* Checkout with unlimited depth
* Fix package_scanner command line
* Merge new package scanner
* Improve debug information of germergebase.sh
* Remove validate_json.js as package_scanner already validates json
* Improve documentation of getmergebase.sh
* Close http client at the end of the program
* Address code review comments
* Fix normalization of aliases
