Multiline attribute access is not supported

[nikololiahim]

The following example from the paper is not recognized by the parser:

dx.pow 2
  .add
    dy.pow 2
  .sqrt > length

[fizruk]

I think J2EO and C2EO do not rely on named arguments, so we can, probably, ignore this syntaxes safely.
@Leosimetti please update documentation of odin, mentioning that we do not support this syntax.
When documentation is updated, we can close this issue.