So that it can hide/restore the hover blame annotation if needed

Fixes #24

Fixes #29 - Commit info tooltip duplicated for current line when blame is enabled
Improves performance of navigating line when active line annotations & statusbar blame are enabled

This is in-case it is still needed (it if off by default)

Allows for deep navigation through git history

Removes duplicate lint rule
Switches on-demand CodeLens to be a global toggle

Rewrites blame annotation controller and provider - fixes whitespace issues, reduces overhead, and provides better performance
Rewrites status bar blame support - reduces overhead and provides better performance
Adds showFileHistory command to status bar
Renames showHistory to showFileHistory
Fixes log to use iso 8601 for dates

Adds showHistory command support to CodeLens
Fixes and improve the showHistory explorer
Refactoring

Refactored commands and blame annotations

Adds better uncommitted hover message in blame annotations

Add new StatusBar settings -- see **Extension Settings** above for details
Renames the `gitlens.codeLens.recentChange.command` & `gitlens.codeLens.authors.command` settings options (to align with command names)
Adds new `gitlens.diffWithPrevious` option to the `gitlens.codeLens.recentChange.command` & `gitlens.codeLens.authors.command` settings
Fixes Diff with Previous when the selection is uncommited
Removes `gitlens.blame.annotation.useCodeActions` setting and behavior

Adds new command to toggle CodeLens on and off when `gitlens.codeLens.visibility` is set to `ondemand`

Replaces blame regex parsing with more robust parser (also use s--incremental instead of --porcelain)
Stops throwing on git blame errors (too many are common)
Fixes issues with Diff with Previous command
Fixes issues with blame explorer code lens -- with previous commits
Fixes issues with compact blame annotations -- skips blank lines

Adds new blame annotation styles (compact & expanded)
Cleaned up blame annotations
Fixes issue with invalid repoPath on first start

Caches failed blames to reduce blame calls
Only clear failed blames from cache on change/save
Add better error messages and handling

Automatically turns off blame only when required now

Removes CodeLens from fields and single-line properties to reduce visual noise

Adds diff menu commands always
Attempts to move the diff file to the correct line number
Fixes code action provider -- works again
Deletes deprecated code

Adds context menus for toggling blame
Adds context menus for opening diffs
More refactoring and many bug fixes

Provides more data (commit message, previous commit, etc)

Upgrades to TypeScript 2
Lots of refactoring and many bug fixes