Credence.Pattern.NonGroupedClauses (credence v0.5.0)

Fixes function clauses that are not grouped together.

When the same function (name + arity) is defined in multiple places in a module with other functions between them, the compiler emits a warning (which fails compilation under warnings-as-errors).

Bad

def foo(1), do: 1
def bar(x), do: x
def foo(x), do: x + 1   # not grouped with first foo/1!

Good

def foo(1), do: 1
def foo(x), do: x + 1
def bar(x), do: x