v1.3.0

New features:

• feat(validation): validate options input for unrecognised keys (#25)
• feat(experimental): add lang support for meta tags and e-* properties (#26)

Bug fixes:

• fix(urls): trim all URLs for whitespace (#31)

Other changes:

• fix(demo): add padding for mobile view (#27)
• refactor(typings): use typings directly from parse5 (#28)
• docs: improve docs and add Issue/PR templates (#29)
• docs(demo): add experimental lang options (#30)