add unnecessary_library_name to recommended

[devoncarew]

• add unnecessary_library_name to the recommended lint set
• close Consider adding unnecessary_library_name to recommended #181
• bump the min sdk to the first stable containing this lint

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[parlough]

Nice! I imagine this will be a big simplicity and education win for lots of projects :)

[kevmoo]

Sweet!

[pq]

🚀