Steno3d

Minor Changes:
- Inline project plotting: `proj.plot()` now plots the project inline in the Jupyter notebook

Minor Features:
- Cookies: Python session now passes cookies back and forth with steno3d.com.
- This eliminates the need to validate the developer key with every communication and substantially reduces upload time (by a factor of 2-3 depending on connection speed, data size, etc).
- The `logout()` task now logs the user out of the server, in addition to the local steno3d session
- `logout()` is registered to run when Python is exited
- NOTE: This is feature is currently in testing on steno3d.com, so upload times may remain unchanged in the short term (as of 2-Sept-2016)

Bug Fixes:
- `Repeated` traits with `allow_none=False` (previously these were `required=True`, `repeated=True` properties) now behave correctly.
- "Correctly" means an empty list is no longer valid (even though `[] is not None`)
- This restores consistency with pre-traitlet (v0.2.2) behaviour
- Effected traits include `Project.resources` and `Volume.data`

Major Features
- Project query module:
- Users can now query, download, and modify their projects
- `steno3d.query.my_projects` returns abbreviated metadata of owned projects
- `steno3d.query.project_by_uid` returns the requested project which may be edited and re-uploaded, either as a new project or overwriting the old project. UIDs are visible in project URLs or from `my_projects` query
- `steno3d.query.last_project` returns the most recently uploaded project
- Support for Parser release:
- `steno3d_obj` object parser is released (https://github.com/3ptscience/steno3d-obj)
- Added parser documentation to support this (https://python.steno3d.com/en/latest/content/parsers.html)
- Created `ParseError` to unify errors in parser plugins
- Minor additional modifications to `steno3d.parsers`
- Overhaul to example classes
- New Airports example
- Removed unnecessary metaclass obfuscation
- Simplified example components to only include (1) raw data and (2) completed projects.

Minor Changes
- Mesh1D `view_type`:
- Setting `line.mesh.opts.view_type` to `line` or `tube` sets the initial state in the app
- Setting options to `None` sets them to default value

Bug fixes
- Another post 0.2.2 backwards compatibility fix: Z once again does not need to be explicitly provided if there is no topography on the surface.

Bug Fixes
- Vectors may be defined as ints. This restores bevavior from version < 0.2.2

Bug Fixes
- Backwards compatibility of vectors restored.
- steno3dpy < v0.2.2 required vectors to be shape (1, 3)
- steno3dpy = v0.2.2 required vectors to be shape (3, )
- Now, either of these shapes are fine.