_frontend/app.py: Set correct element-path in interactive bst-init

See merge request !912

Benjamin Schubert authored Oct 19, 2018 and Benjamin Schubert committed Nov 01, 2018

This includes a new command mimicking pytest-runner so that we
can drop this dependency

This was the only setup_requires dependency that we had and
will make like easier for people behind proxies

Remove dependency on pytest-runner

See merge request !886

Angelos Evripiotis authored Oct 18, 2018 and Tristan Van Berkom committed Nov 01, 2018

Remove the 'MAKEFLAGS' and 'V' defaults.

Now that there is a specialised 'make' element, these make-specific
defaults don't make sense here. This element is meant to be a blank
slate for folks to build on.

Note that this is a breaking change, that will require some users to
make changes to their .bst files if they are expecting these environment
variable to be set.

_versions.py: BST_FORMAT_VERSION bumped to 18.

This fixes issue #718

BREAK: manual.yaml: don't set any default env vars

Closes #718

See merge request !916

Since the core Python `ChainMap.get()` implements with:

    self[key] if key in self else default

The double-chain-lookup is expensive.  This simple change solves that
for our ChainMap derived structure.  As such it improves matters
for #466 somewhat.

Signed-off-by: Daniel Silverstone <daniel.silverstone@codethink.co.uk>

_yaml.py: Implement `get()` for `ChainMap`

See merge request !919

This will now return paths in the same order as list_relative_paths.