Configuration:
- PDF.js version: 2.0.550

Steps to reproduce the problem:
1. Render document in SVG mode `renderMode="svg"`

What is the expected behavior? (add screenshot)
Rendering annotations same way as they rendered on canvas

What went wrong? (add screenshot)
```
Warning: Unimplemented operator beginAnnotations
Warning: Unimplemented operator endAnnotations
```
this.pendingEOFill = true;
      this.fillStroke();
    }
    closeFillStroke() {
      this.closePath();
      this.fillStroke();
    }
    closeEOFillStroke() {
      this.pendingEOFill = true;
      this.closePath();
      this.fillStroke();
    }
    endPath() {
      this.consumePath();
    }
    
    clip() {
      this.pendingClip = NORMAL_CLIP;
    }
    eoClip() {
      this.pendingClip = EO_CLIP;
    }
    
    beginText() {
      this.current.textMatrix = IDENTITY_MATRIX;
      this.current.textMatrixScale = 1;
      this.current.x = this.current.lineX = 0;
      this.current.y = this.current.lineY = 0;
    }
    endText() {