Use :cd to change current directory

Conflicts:
	src/ScriptCs.Hosting/LineAnalyzer.cs
Use :cwd to show current working directory
Added directory enumeration
Merge pull request #598 from estoy/enumerate-directories

Directory enumeration
Update ScriptCs.Version.props

BuildQuality should be alpha
Merge pull request #597 from estoy/change-directory

Repl change and view directory