Adds last commit date to branches

Giving up on better else/catch/finally formatting -- can't fight anymore
Switching to tabs for better accessibility
https://twitter.com/sh4na/status/1146837957200027648

Fixes focus issues with compare picker

Changes working tree/branch comparision selection to be per-comparison

Programatically expands search/compare results for better experience
 - Adding collapsed &  then expanding provides better feedback (spinner)

Updates README (wip)
Updates welcome & settings pages (wip)

Adds ability to start a compare directly from the view

Renames showCommitInResults to showCommitInView
Renames showFileHistoryInResults to showFileHistoryInView

Normalizes ctor parameters for ViewNodes

Config when's can be resolved before extension activation

Fixes auto-refresh context on repositories view loading

Changes changelog image links to permalinks
Moves all images for docs into a docs folder
Removes unused images

When tracking the active file, only select the repo if in another

Closes #354 - Adds line history explorer (wip)
Closes #456 - Adds repository status to the repository nodes

Adds custom label support to result view

- Removes mix-tree support
  - Avoids nesting on the current branch
  - Caches basename
  - Replaces folder icons with theme icons
    - Folder icons will now follow the file icon theme used
  - Fixes minor nitpicks