Batcave

- Added
- Added artifact archive support to base Builder class.

- Changed
- Fix Windows to Windows remote file copy in servermgr.ServerPath().copy().
- Fix build.ConfigurationBuilder use of verfiles.
- Update docker to 3.1.3.

- Removed
- Removed automated post-build expansion of config files in build.Builder.execute().
- Removed arch argument to build.Builder.

- Changed
- Overhaul servermgr.ServerPath() to subclass pathlib.PurePath().
- Update setuptools to 39.0.1.

- Changed
- Fixed use of walk with Path().

- Changed
- Use the --pull option on docker builds.

- Added
- Added branch and environment information to PRDB.
- Added support for .Net Core versioning in .csproj files.

- Changed
- Changed from os.path usage to pathlib.Path.
- Update docker to 3.1.1
- Update PyQt5 to 5.10.1
- Update pywin32 to 223
- Update setuptools to 38.5.2

- Removed
- Removed the PRDB build, release, and revision information.
- Removed workspace and cmsclient support.

- Added
- Added build.DockerUnitTester for extracting test results run during Docker image build.

- Changed
- Use Docker Python API instead of Docker CLI.

- Removed
- Removed the civars.txt file.