Added experimental feature warnings

Author: jmwright

changes.md

@@ -8,6 +8,10 @@ Changes
    * Fixed a bug in `Mixin1DProtocol.tangentAt()` where `paramAt()` was being called twice. This should only break scripts that relied on the incorrect behavior. [#641](https://github.com/CadQuery/cadquery/pull/641)
    * `each` and `eachpoint` accept now `combine` argument defaulted to `True` [#954](https://github.com/CadQuery/cadquery/pull/954). This only affects use cases involving solids.
 
+   ### Experimental Features
+   * Constraint-based sketches are still being worked on and improved, and are not production ready. There are multiple issues open including [#1127](https://github.com/CadQuery/cadquery/issues/1127), [#959](https://github.com/CadQuery/cadquery/issues/959), [#968](https://github.com/CadQuery/cadquery/issues/968) and [#960](https://github.com/CadQuery/cadquery/issues/960).
+   * The Convex Hull feature should also be considered experimental. Issues open for that feature include [#931](https://github.com/CadQuery/cadquery/issues/931), [#1190](https://github.com/CadQuery/cadquery/issues/1190), [#1224](https://github.com/CadQuery/cadquery/issues/1224) and [#943](https://github.com/CadQuery/cadquery/issues/943).
+
    ### Other changes
    * Combine option can be set to "cut" (or "s") resulting in a subtractive operation [#954](https://github.com/CadQuery/cadquery/pull/954)
    * Documentation updates [#648](https://github.com/CadQuery/cadquery/pull/648) [#654](https://github.com/CadQuery/cadquery/pull/654) [#656](https://github.com/CadQuery/cadquery/pull/656) [#659](https://github.com/CadQuery/cadquery/pull/659) [#668](https://github.com/CadQuery/cadquery/pull/668) [#689](https://github.com/CadQuery/cadquery/pull/689) [#695](https://github.com/CadQuery/cadquery/pull/695) [#699](https://github.com/CadQuery/cadquery/pull/699) [#711](https://github.com/CadQuery/cadquery/pull/711) [#727](https://github.com/CadQuery/cadquery/pull/727) [#733](https://github.com/CadQuery/cadquery/pull/733) [#734](https://github.com/CadQuery/cadquery/pull/734) [#737](https://github.com/CadQuery/cadquery/pull/737) [#738](https://github.com/CadQuery/cadquery/pull/738) [#748](https://github.com/CadQuery/cadquery/pull/748) [#757](https://github.com/CadQuery/cadquery/pull/757) [#774](https://github.com/CadQuery/cadquery/pull/774) [#775](https://github.com/CadQuery/cadquery/pull/775) [#805](https://github.com/CadQuery/cadquery/pull/805) [#813](https://github.com/CadQuery/cadquery/pull/813) [#837](https://github.com/CadQuery/cadquery/pull/837) [#839](https://github.com/CadQuery/cadquery/pull/839) [#843](https://github.com/CadQuery/cadquery/pull/843) [#845](https://github.com/CadQuery/cadquery/pull/845) [#846](https://github.com/CadQuery/cadquery/pull/846) [#847](https://github.com/CadQuery/cadquery/pull/847) [#848](https://github.com/CadQuery/cadquery/pull/848) [#852](https://github.com/CadQuery/cadquery/pull/852) [#863](https://github.com/CadQuery/cadquery/pull/863) [#866](https://github.com/CadQuery/cadquery/pull/866) [#867](https://github.com/CadQuery/cadquery/pull/867) [#887](https://github.com/CadQuery/cadquery/pull/887) [#908](https://github.com/CadQuery/cadquery/pull/908) [#910](https://github.com/CadQuery/cadquery/pull/910) [#912](https://github.com/CadQuery/cadquery/pull/912) [#921](https://github.com/CadQuery/cadquery/pull/921)

doc/sketch.rst

@@ -87,6 +87,8 @@ using :meth:`~cadquery.Sketch.assemble`. Afterwards, face based operations can b
 Convex hull
 ===========
 
+.. warning:: The Convex Hull feature is currently experimental.
+
 For certain special use-cases convex hull can be constructed from straight segments
 and circles.
 
@@ -104,6 +106,8 @@ and circles.
 Constraint-based sketches
 =========================
 
+.. warning:: The 2D Sketch constraints and solver is currently experimental.
+
 Finally, if desired, geometric constraints can be used to construct sketches. So
 far only line segments and arcs can be used in such a use case.