Make sure the footer year changes when needed
Fix liquid settings
Allow to quickly toggle the sources by double-clicking
Remove redundant whitespace from the query
Update Gemfile.lock
Implement HSS doc search
Remove redundant initializer
Implement HSSProperty scorer
Don't repeat query parsing code
Update the search input only when needed
Don't remove search results' whitespace

It also removes newlines and indentation from code block. We could
write a smarter whitespace remover that excludes pre and code tags, but
I don't think it's that important.
Embedded property info
Show text scope for properties
Fix the sources selector align issue