YAML metadata parsing filename issue

[fmariluis]

If a binary file has a somewhat 'complex' filename, nanoc cannot match the binary file with the metadata.

Steps to reproduce

Given a binary file with a filename like ubuntu-16.10-server-amd64.iso.torrent, I would like to create a yaml file with some metadata. According to the docs, a yaml file like ubuntu-16.10-server-amd64.iso.yaml should work.

However, the only way this works is if I change the binary filename to: ubuntu-16-10-server-amd64.iso.torrent (note that I replaced the dot in 16.10 with a dash) and therefore, the yaml file to ubuntu-16-10-server-amd64.iso.yaml.

I know that parsing filenames can be complex (specially considering multiplatform projects), so if there's no way around this, docs should be updated with this case (I can do this 😉).

Otherwise, thanks for an amazing project!

[denisdefreyne]

I have a fix in #1059.