Layer is no longer the first argument for drawing elements, now a later kwarg. Defaults to core.default_layer
Updated docstrings to reflect changed position of layer argument
Corrected aa faulty layer argument in Elements
Modified examples to adopt new layer parameter order
Fixed absent final segment in Polyline
Modified documentation to reflect changes to layer
Added doc/source/output.gds to gitignore
Fixed improper param heading in Elements.to_gds
Updated docs and version numbers in preperation for v0.3.0 release
Added .egg-info to gitignore