Removes unused pngquant

Fixes search & compare README links

Changes unpublished branch text

Adds missing settings to README

Renames show commit in view to search for commit in side bar

Renamed to Gutter Changes
Provides local changes if any, or recent commit changes
Distinguishes between added, changed, and removed lines
Shows a hover for the full diff hunk
Shows diff even with unsaved changes

Increases default avatar size in hovers from 16 to 32px

* adds option to disable click actions on recent changes and authors code lens commands

* Updates documentation in the README file to reflect the changes