parse-changelog - should handle tags only and not strings at top level.
1. Removing empty file contents
2. Merging the results of parsing changeling from repo
3. Adding function to test whether changelong files exists
4. Adding releases parsing :)
Fixing bug in parsing markdowns
1. getting inner content of sub children nodes
2. Handling parse exceptions - parse timeout, invalid markdown, etc
3. Handling no results when extracting versions