* Allow backslash after drive name
Before, paths like `C:/path/to/something` were considered absolute, but
`C:\path/to/something` were not
Refs vimeo/psalm#1913
* Revert "Mark testPluginFilenameCanBeAbsolute incomplete on Windows (#1914)"
This reverts commit 210ac39d00.
* Revert "Revert "Implement better progress""
This reverts commit 4302596654.
* Revert "Revert "Implement dots progress bar""
This reverts commit e41733d789.
* Revert "Revert "Switch to VoidProgress by default""
This reverts commit 304ffeb0a3.
* Revert "Revert "Pass success flag to progress""
This reverts commit 62a690ee4e.
* Improve socket communication
* Use an underscore
* Add means to disable progress
* Add extra newline before progress bar