Add a plugin that supports downloading files verbatim from a source with
an optional overridable filename and destination directory. Bumps bst
format version to 10.

Fixes #163

When the user provides a path for the filename parameter, provide a reason

Add remote source plugin

Closes #163

See merge request !541

William Salmon authored Jul 26, 2018 and Javier Jardón committed Jul 26, 2018

Daniel went through the Doc's etc and made a list of suggestions.
These are the result of the most easily patched suggestions and
one or two thing that I noticed as well.

Documentation typos and fixes

See merge request !569

As socket files are automatically created on bind().

Fixes #500.