Add release notes for v2.2.0

This is missing some changes by Kuldeep, which will be added in a later
commit.

content/release_notes/v2_2/_index.md

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+---
+title : Version 2.2
+weight : 5
+---
+
+## Key Features
+
+TODO
+
+### Changes in Detail
+
+{{% children %}}

content/release_notes/v2_2/action/index.md

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+---
+title : Action
+---
+
+## Wiggle Action
+
+A new operator was added that allows removing channels that were previously
+added. The operator is drawn as an X button next to each channel.

content/release_notes/v2_2/bvh/index.md

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+---
+title : BVH Tree
+---
+
+## Construct BVH Tree
+
+The *Mesh* option of the node now takes a mesh input as opposed to separate
+Vertex Locations and Polygon Indices.
+
+## BVH Socket
+
+The BVH socket now have an Object property, in which the BVH is constructed from
+the data of the object.

content/release_notes/v2_2/color/index.md

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+---
+title : Color
+---
+
+## Separate Color
+
+The *Seperate Color* node is now vectorized.

content/release_notes/v2_2/falloff/index.md

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+---
+title : Falloff
+---
+
+## Mix Falloff
+
+A new *Subtract* method was added to the node.
+
+## Radial Falloff
+
+A new *Radial Falloff* node was added. The value of the falloff is equal to the
+normalized angle along a plane, with an input offset phase.
+
+{{< video radial_falloff.mp4 >}}
+
+## Object Controller Falloff
+
+A new *Radial* mode was added. The mode is identical to the aforementioned
+*Radial Falloff* where the center and normal of the plane are controlled by the
+location and local axis of the controller object.
+
+A new *Create Trigger* operator was added in the *Advanced Node Settings*. The
+operator creates execution triggers on the input object's transforms as needed.
+
+## Remap Falloff
+
+A new *Interpolation* input was added. The remapped range will be evaluated at
+the input interpolation if it is not linear.
+
+{{< video remap_falloff_interpolate.mp4 >}}

content/release_notes/v2_2/list/index.md

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+---
+title : List
+---
+
+## Repeat List Elements
+
+This node was added. The node repeats each element of the list in-place,
+contrary to the *Repeat List* node, which repeats the whole list.
+
+{{< video repeat_list_elements.mp4 >}}
+
+## Insert List Element
+
+This node was added. The node inserts an element at a specific location in the
+list.
+
+{{< video insert_list_element.mp4 >}}

content/release_notes/v2_2/mesh/index.md

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+---
+title : Mesh
+---
+
+## Mesh Object Output
+
+The *Material Indices* input was removed. Material indices are now part of the
+mesh structure, stored as a built-in attribute. Use the new *Material Indices*
+input in the *Combine Mesh* node instead.
+
+## Regular Polygons
+
+Menu and search entries were added to regular polygons, including Pentagon,
+Hexagon, Heptagon, and Octagon. Those entries add a Circle node with the
+appropriate number of points.
+
+## BMesh Mesh Data
+
+A new *Material Indices* output was added.
+
+## Polygon List Socket
+
+Polygon Lists can now be implicitly converted into Integer Lists.

content/release_notes/v2_2/number/index.md

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+---
+title : Number
+---
+
+## Float Range
+
+A new *Interpolation* input was added. If it is not a linear interpolation, the
+normalized range will be evaluated at the interpolation. This is particularly
+useful to distribute points in a non linear distribution.
+
+{{< video float_range_interpolation.mp4 >}}

content/release_notes/v2_2/rotation/index.md

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+---
+title : Rotation
+---
+
+## Separate Quaternion
+
+The *Separate Quaternion* node is now vectorized.
+
+## Combine Quaternion
+
+The *Combine Quaternion* node is now vectorized.

content/release_notes/v2_2/spline/index.md

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+---
+title : Spline
+---
+
+## Spline Curvatures
+
+Spline nodes now return spline curvatures when possible. A low curvature value
+means the spline is mostly straight at this point, while a high curvature value
+means the spline is mostly curved or bent at this point. One can use this
+information to remove points at the straight portions of the spline as they
+don't provide any signification information to the shape of the spline.
+
+{{< video spline_curvature.mp4 >}}
+

content/release_notes/v2_2/subprogram/index.md

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+---
+title : Subprogram
+---
+
+## Subprogram Socket
+
+All subprogram sockets now have a *Hide* option in the *Advanced Node Settings*,
+when enabled, the corresponding socket will be hidden by default when the user
+adds an *Invoke Subprogram* node.
+
+## Script Node
+
+Script node inputs now have a *Default Value* option in the *Advanced Node
+Settings*. When the user adds an *Invoke Subprogram*, the inputs will have their
+default values set.
+
+## Viewport Input
+
+A new *Order Weight* option was added in the *Advanced Node Settings*. Nodes
+with lower weights will have their viewport panels placed at the top, while
+nodes with higher weights will have their viewport panels placed at the bottom.

content/release_notes/v2_2/text/index.md

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+---
+title : Text
+---
+
+## Separate Text
+
+A new *Dimensions* option was added to the node. For curve output, this option
+sets the curve to be 2D or 3D.