Deprecate magic train untrain methods

[ibnesayeed]

Before releasing 2.2.0 magical train_* and untrain_* style methods should be deprecated.

• Add deprecation warning
• Add tests to not use these methods
• Update documentation to not use these methods

[ibnesayeed]

It would also be good to have the official development Docker image available (#101) before the release of 2.2.0 so that it can be documented and advertised with this rather significant release.

[ibnesayeed]

Perhaps we can also include basic validation #71 as part of 2.2.0 release.

[Ch4s3]

Sounds good. I have a working branch for the first two items. I'll push it up later.

[ibnesayeed]

I can take care of the documentation, later tonight.

[ibnesayeed]

PR #141 takes care of the documentation.

[ibnesayeed]

@Ch4s3 a note for you. I have seen test_external_classifying of lsi_test.rb using magic methods. Just make sure to take care of all the places where Bayes is being called with magic methods.

[Ch4s3]

Yeah, that's on the list. I'll try to devote some time to this tomorrow or Monday.

[Ch4s3]

I'll try to get back to this asap

[ibnesayeed]

@Ch4s3 please take care of the second point on the original post of this ticket before releasing 2.2.0 as per #164. This should be pretty easy and quick to deal with.

[Ch4s3]

@ibnesayeed will do.