Changes

• Created Recalculate Bounds and Recalculate Normals utility deformers.
• Made all deformer's jobs public. They are self-contained and might be useful elsewhere.
• Added AddDeformer and RemoveDeformer utility methods to Deformable and GroupDeformer so you can add/remove deformers without having to create a DeformerElement.
• Added overload to DeformHandles.Curve that lets you specify a position, rotation and scale rather than passing a transform.
• Decreased the horizontal margin of the Creator window buttons.
• Default mesh has lightmapping uvs generated.
• Added bug report menu item.
• Deformer's check float equality directly. They now call Mathf.Approximately.
• Added default case to switch statements.
• Made sure all deformers use their properties rather than the backing fields.
• Removed some unused GUIContents
• Fixed spelling of encapsulate method in bounds struct.
• Simplified mathx.pingpong.
• Made editor's handle utility classes readonly.
• Removed unnecessary text string from EditorGUILayoutx.FoldoutScope.
• Renamed derivative noise jobs to _3D noise jobs.
• Fixed name of squash and stretch job. It was called BulgeJob for some reason.
• Fixed name of transform offset job, it was just called TransformJob.
• Curve Scale deformer's curve handle doesn't scale vertically with its axis.