Only override run list if non-empty
Use run list from JSON file if present
Don't parse cookbook if JSON file contains run list
Update changelog
Merge pull request #18 from mlafeldt/runlist-in-json-file

Use run list from JSON file if present
Get cookbook files without using file globs
Add ability to strip cookbooks
Strip all cookbooks after resolving dependencies
Add InTestDir to util package
Test cookbook stripping
Update changelog

[skip ci]
Merge pull request #21 from mlafeldt/strip-cookbooks

Strip all non-cookbook files after resolving dependencies
WIP [ci skip]