Rename Interpolation to Projection

Closes #13

See merge request !74

June monster maint

See merge request !73

Fully initialize LoopyKernelInstruction

See merge request !70

Drop python2 support from the CI

See merge request !68

Gitlab CI: be specific about which pocl device to use

See merge request !66

Distribute FunctionSymbol over Object Arrays

See merge request !65

Use "nodefaults" in CI conda env file

See merge request inducer/grudge!64

Add eagerly evaluated interface to grudge, plus example

See merge request !63

Fix 1D variable velocity example

See merge request inducer/grudge!58

Use logging and ctx_factory in tests

See merge request !61

* uses logger instead of print
* uses the provided `ctx_factory` instead of `create_some_context`

Add Elementwise Reductions

See merge request !53

Fix boundary emptiness check

See merge request !60