Create mock boundary, assuming Open3::popen3 behaves properly (it does)
only rescue relevant exceptions in Cliver::ShellCapture
win: spec input should use File::PATH_SEPARATOR
yay consistency! (jruby support)
enable specifying platform in File::absolute_path?
Attempt to make tests compatible with Windows
Merge branch 'feature/windows-compatibility-and-shell-capture-cleanup' into develop