bug fix for non-projective links

// CoNLL-U SVG Viewer by Koichi Yasuoka, December 16, 2018.

// CoNLL-U SVG Viewer by Koichi Yasuoka, February 6, 2019.

// Nos. 1, 2, 4, 5, 7, and 8 columns are used.

"use strict";

var conllusvg=new Object();

	c.matrix[i][x].height=h;

    }

  }

  for(x in c.links){

    y=c.links[x].from;

    if(x==y)

      continue;

    h=c.matrix[x][x].height;

    for(k in c.matrix[x]){

      if(k!=x&&h==c.matrix[x][k].height){

	if(c.links[k].from!=x){

	  h=-1;

	  break;

	}

      }

    }

    if(h==-1){

      for(k in c.matrix[x]){

	if(h-c.matrix[x][k].height<0)

	  h=c.matrix[x][k].height;

      }

      h++;

      if(x-y<0){

        j=parseInt(x);

        k=parseInt(y);

      }

      else{

        j=parseInt(y);

        k=parseInt(x);

      }

      g=c.nodes[x].group;

      for(i=j;i<=k;i++){

	if(c.nodes[i].group==g)

	  c.matrix[i][x].height=h;

      }

    }

  }

  for(x in c.links){

    y=c.links[x].from;

    if(x==y){