Group Layer
============

+------------------+------------------------------------------------------------------+
|     Property     |                    Path to Property in lottie                    |
+==================+==================================================================+
|      Z depth     |          Depends on ordering of layers in lottie format          |
+------------------+------------------------------------------------------------------+
|      Amount      |   layers/preComp.json -> "ks" -> helpers/transform.json -> "o"   |
+------------------+------------------------------------------------------------------+
|   Blend_method   |       layers/preComp.json -> “bm” -> helpers/blendMode.json      |
+------------------+------------------------------------------------------------------+
|      Origin      | layers/preComp.json -> "ks" -> helpers/transform.json -> "p"/"a" |
+------------------+------------------------------------------------------------------+
|  Transformation  |       layers/preComp.json -> "ks" -> helpers/transform.json      |
+------------------+------------------------------------------------------------------+
|      Canvas      |                       sources/preComp.json                       |
+------------------+------------------------------------------------------------------+
|       Speed      |            layers/preComp.json -> "tm"(time remapping)           |
+------------------+------------------------------------------------------------------+
|    Time Offset   |            layer/preComp.json -> "tm"(time remapping)            |
+------------------+------------------------------------------------------------------+
|  Lock selection  |                            Not needed                            |
+------------------+------------------------------------------------------------------+
|   Outline Grow   |             Global parameter -> ``settings.OUTLINE_GROW``        |
+------------------+------------------------------------------------------------------+
|      Z Range     |        Opacity of layers in canvas is modified accordingly       |
+------------------+------------------------------------------------------------------+
| Z Range Position |        Opacity of layers in canvas is modified accordingly       |
+------------------+------------------------------------------------------------------+
|   Z Range Depth  |        Opacity of layers in canvas is modified accordingly       |
+------------------+------------------------------------------------------------------+
|   Z Range Blur   |                           Not Supported                          |
+------------------+------------------------------------------------------------------+

Important points
----------------

- In Lottie, all the parts of shapes/elements lying outside a precomposition are cut off and never displayed. Hence the over all size of a pre-comp is increased by some amount as a precaution. Some part which is outside a pre-comp might come inside the overall canvas after some transformations(rotation/translation/scale). This increase is given by:
  ``ADDITIONAL_PRECOMP_WIDTH`` and ``ADDITIONAL_PRECOMP_HEIGHT``