Fix#1721 "runInTerminal" is broken on non-Windows platforms.
Fix#1722: Output is not captured in "noDebug" with "runInTerminal"
Groundwork for #1713: adapter: multiple concurrent sessions
Move "launch" request parsing and debuggee process spawning, PID reporting and tracking, stdio "output" capture, and exit code reporting into launcher. Launcher now communicates to the adapter via a full-fledged message channel.
Refactor adapter. Add an abstraction for a debug session, and treat IDE, launcher, and debug server as separate components managed by that session.
Improve adapter logging to capture information about current debug session, and current message handler if any.
Fix reporting exceptions from message handlers.
Various test fixes.
* Fix#811: new socket server to receive pid and port for subprocesses
* Install test dependencies from test_requirements.txt on Travis
* Multiproc support can't handle os.fork() as implemented.
On Python 3.4+, use set_start_method('spawn') to ensure that multiprocessing module doesn't use fork.
On lower versions, skip the test.
* Restrict the multiprocessing test to Windows for now.
* Add new JSON IPC implementation to be shared between the product and the tests.
Add pytest-based test support, and wire it up to setup.py and Travis.
Dial pylint down to complain about important things only.
Various minor fixes exposed by pylint.
Add basic .vscode/settings.json for linter settings (and anything else that's workspace-specific).
Fixes#831.
* Test compat fixes for python 3.4 tests
* Enable python 3.4 CI in travis
* Fix for 3.4 missing text in traceback list
* Fix linter
* Add python 3.4 to classifiers
* Fix for line text
* Clean up handling of vendored projects.
* Add the ptvsd._vendored package.
* Try the new location and fall back to the old one.
* Fix a typo.
* Add ptvsd._vendored.list_all().
* Fix setup.py and tests/__main__.py.
* Exclude .pyc files (from python 2).
* Deal with implicit relative imports in 2.7.
