Lytest

Phidl fallback when klayout standalone fails completely
This sometimes happens on Windows. Luckily, phidl is totally stable on both.

lygadgets detects the installation error. lytest responds by falling back.

Now requires `lyipc`
It is used too much. Adds a lot of functionality.

Git integration
Enable it with

lytest git-config


Then you can do things like

git diff feature-branch tests/ref_layouts


If you have a [lyipc](https://github.com/atait/klayout-ipc) server running, it will automatically put the pair of offending layouts up in the GUI.

The command line interface is new. It is now in command-arguments format.

Changes
Better behavior with gitignores

Changes

Stronger definition of "containers": from the outside, multi-purpose language-independent layout generators; from the inside, language-specific context managers.

Script based context and container. This will be important for testing existing chips as a whole instead of unit testing their pieces.

Much more README

Changes

- Travis CI integration for testing and deployment