Added NEWS.md

Author: AleMorales

NEWS.md

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+# VirtualPLantLab v0.0.2 release notes
+
+There is no official release for VirtualPlantLab 0.0.1, so the changes below are relative to
+the (unregistered) VPL.jl.
+
+## Changes to API
+
+- All exported functions that are not associated to a data type use `snake_case` style,
+unless one of the words has a single letter. For example, `loadmesh` becomes `load_mesh` but
+`nvertices` remains the same in the API. Similarly, `isRoot` becomes `is_root`. Most of
+these changes affect the graph-related and rendering API. Functions associated to datatypes
+(i.e., constructors) use `CamelCase` but that was already the case (e.g., `SolidCube!` or
+`Scene`) so no changes there!.
+
+- The function `feed!` now belongs to PlantGeomTurtle, so to define methods for `feed!` you
+should now use `PlantGeomTurtle.feed!` instead of `VPL.Geom.feed!`.
+
+- The functions `render` and `draw` (and their mutating `!` versions) no longer have a `backend`
+argument to set the graphics backend. Instead, the user should import `GLMakie` (for native
+backend), `WGLMakie` (for web backend) or `CairoMakie` (for Cairo backend) before any call
+to `render` or `draw`. Note that these packages are not installed when installing
+VirtualPlantLab.jl, so the user may need to install them. Check the new version of the
+tutorials for more information.