v2.2.0

New

• Length comparisons — flags length(list) == 0, 0 == length(list), and length(list) > 0; suggests list pattern matching, == [], or != [].
• Identity Enum.uniq_by/2 — flags Enum.uniq_by(collection, fn x -> x end); suggests Enum.uniq/1.
• Identity Enum.sort_by/2 — flags Enum.sort_by(collection, fn x -> x end); suggests Enum.sort/1.
• length/1 in guards — flags small literal comparisons in guards; suggests list pattern matching.

Fixed

• Regression coverage for bare literal with clauses — keeps valid clauses such as true in with blocks from regressing.
• CI — refactored the length-in-guard check to satisfy strict Credo nesting rules.