Updates GitLens logo
Adds CodeStream sponsor

https://github.com/dominictarr/event-stream/issues/116

https://github.com/dominictarr/event-stream/issues/116

Keeps all path manipulation on the host rather than guest
Fixes shared/local path munging for mac/windows
Keeps current user lookup local when a guest
Keeps difftool lookup local when a guest
Avoids fetch date lookup when a guest
Stops clearing node_modules (for now)

Enables source maps always
Minifies css
Removes unused plugins

Switches to use full source-map for better debugging (stepping)

Adds the gitlens icon to settings editor and welcome page

Updates dependencies

Replaces git content provider with git fs provider
Adds Buffer output support to git calls

Changes from out to dist
Adds size-plugin (commented out for now)
Adds image cache to improve bundle performance

Adds new webpack tree shaking plugin

Uses webpack for all of it