Heredoc argument alignment

[barunio]

Rufo allows for some flexibility regarding aligning call parameters, but does not allow for a common pattern when using heredocs. Specifically:

# This is allowed:
foo :arg1, :arg2,
  :arg3

# This is not allowed
foo :arg1, <<-TEXT
  blah
TEXT

# This is the preferred alignment (or starting the heredoc on a new line)
foo :arg1, <<-TEXT
      blah
    TEXT

The disallowed format is a common one that is in many cases easier to read. Is this restriction intentional?