Initial Commit of Fuzzy Autocomplete 2

Many bug fixes and improvements, including:
- option to sort by score
- visual feedback on completion list
- visual feedback in inline preview
- useful prefix based on whole match
- optional informative list header
- settings window
- tweaked formula
- better thresholding
- performance tweaks
- ux tweaks
- ...
Pull request adjustments

- remove a redundant MARK followed by a DLog in the next line
- make hidden column width equal to -intercellSpacing.width instead of a magic number -3
Fixed a typo in the Changelog.
Merge pull request #33 from FuzzyAutocomplete/develop

Fuzzy Autocomplete 2.0