winfsp/winfsp v1.3B2 on GitHub

THIS IS A PRE-RELEASE

This pre-release contains kernel-mode changes. While every precaution has been taken to ensure stability, it is recommended that this pre-release is only installed by developers and/or power users.
This pre-release includes signed drivers for Windows 7, 8, 10, but not Server 2016.

Multiple Launcher changes:
- New FspLaunch API. File systems can be started, stopped, queried and listed using FspLaunchStart, FspLaunchStop, FspLaunchGetInfo and FspLaunchGetNameList.
- New Launcher registry settings RunAs and WorkDirectory. RunAs allows the laucher to launch a file system process under the service accounts LocalService and NetworkService. WorkDirectory can be used to specify the work directory for a newly launched file system process.
The MEMFS sample file systems are now launched under the LocalService account.
The FSD (File System Driver) and its interaction with the Windows MUP (Multiple UNC Provider) has been changed. In practice this eliminates the delays experienced when right-clicking on a WinFsp-backed network drive in the Windows Explorer. (GitHub issue #87.)
The WinFsp network provider is now added first in the provider order list. Previously it was added last. (GitHub PR #131; thanks @felfert.)
The WinFsp installer now uses the Wix Provides dependency extension to provide a WinFsp dependency key. (GitHub PR #129; thanks @felfert.)