Relicense from LGPL to MIT

[cardmagic]

I'm planning to relicense the classifier gem from LGPL-2.1 to MIT and wanted to get consent from contributors, particularly @dfayram who wrote the original LSI implementation.

Why change to MIT?

1. Simplicity - MIT is a short, easy-to-understand license. LGPL's terms around linking and distribution can confuse users about what they're allowed to do.

2. Ruby ecosystem norms - The vast majority of Ruby gems use MIT. LGPL creates unnecessary friction for developers evaluating dependencies.

3. Commercial adoption - Some companies have blanket policies against LGPL due to its copyleft provisions. MIT removes this barrier.

4. Current state is confusing - The lib/classifier.rb header already contains MIT license text, but the LICENSE file and gemspec say LGPL. Cleaning this up is overdue.

5. No practical benefit from LGPL - LGPL's protections made more sense for C libraries. For a Ruby gem that's always distributed as source, the distinction between LGPL and MIT is largely academic.

What I need

If you contributed code to this project and are okay with it being relicensed under MIT, please comment below with your approval. Specifically looking for sign-off from @dfayram for the LSI code.

Thanks!