BSON::Document#to_hash should be defined so that Hash(doc) works

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?
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      Currently BSON::Document behaves as follows:

      doc = BSON::Document.new({"foo" => "bar"})

doc.to_h.class #=> Hash -- CORRECT

Hash(doc).class #=> BSON::Document -- non-optimal / confusing

      Defining `BSON::Document#to_hash` as an alias to `.to_h` would fix this. Since the content of BSON::Document is 1-to-1 equivalent to a hash, it makes sense to do.

      Compare for reference the equivalent method `BSON::ObjectId#to_str` which enables us to do:

      String(BSON::ObjectId.new).class #=> String

      (For clarity, this is only for BSON::Document, am NOT proposing the same for Mongoid::Document)

            Assignee:
            Unassigned
            Reporter:
            Johnny Shields
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              Created:
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