validate fields like changefreq, priority etc.

[rauberdaniel]

What do you guys think about adding validation for provided fields like changefreq, priority etc.?

Moreover, what do you guys think about a major refactoring to use https://github.com/ekalinin/sitemap.js as a dependency and use that for sitemap generation?

[assemblebot]

@rauberdaniel Thanks for the issue! If you're reporting a bug, please be sure to include:

• The version of assemble you are using.
• Your assemblefile.js (This can be in a gist)
• The commandline output. (Screenshot or gist is fine)
• What you expected to happen instead.