- Update to 3.4.0:
  - Remove rules C407 (Unnecessary <dict/list> comprehension
    - <builtin> can take a generator) and C412 (Unnecessary
    <dict/list/set> comprehension - 'in' can take a generator).
    Both rules recommended increasing laziness, which is not
    always desirable and can lead to subtle bugs. Also, a fully
    exhausted generator is slower than an equivalent
    comprehension, so the advice did not always improve
    performance.
  - Drop Python 3.5 support.
  - Support Python 3.9.
  - Move license from ISC to MIT License.
  - Partially reverted the change to C408 to make it apply again
    to when dict is called with keyword arguments, e.g. dict(a=1,
    b=2) will be flagged to be rewritten in the literal form
    {"a": 1, "b": 2}
- Skip test test_C416_fail_1_list
  (gh#adamchainz/flake8-comprehensions#313).

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