Allow creation of minor and major documents.

[DevLab2425]

Currently, docs are created for the exact version listed in package.json. This is a proposal to have docs generated for a range of versions (minor or major). For example, a version of 15.2.1, with a resolution: 'minor' would generate documents in a folder labeled 15.2.x. Similarly, a resolution: 'major' would generate a folder labeled 15.x.x.

This would allow a single source for a range of versions, reducing the amount of files to be stored.