Rework Scanner

[glebm]

• Allow multiple scanner sources Multiple scanners #163:

search:
  scanners: [[class_name, options]]
  *shared_options

• Scanners should return result sets and not a tree.
• Default to only scanning full keys (what is now --strict).
• AST scanner for .rb files AST Scanner for .rb files #165

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In the future (after v0.9.0), it would be nice to also have:

• AST scanner for Temple-compatible templates.
• Runtime collection scanner.
• Avoid storing dynamic keys in a tree. Instead, these should be handled separately. Avoid passing dynamic keys to methods that shouldn't have to handle them (such as split_key). This need lots of work.

[atipugin]

Any progress on it?:)

[glebm]

Unfortunately, I don't have much time to work on this at the moment

[atipugin]

That's sad :(

[glebm]

I will make time to help if anyone else wants to work on this ;)

[kieranklaassen]

+1