Sketch and Workplane improvements

[adam-urbanczyk]

This should resolve #1614, #1575, #1511, #1519, #1603, #1615 and add special methods to Sketch.

• val, vals
• filter, map, apply, invoke
• DXF export
• face() accepts Shape
• bool ops as operators
• deprecate previous naming convention
• uniform bool op naming for Shape, Sketch and Workplane
• add(), subtract() and replace() methods for Sketch
• extend Workplane._getFaces() to work with selected faces
• allow 0 spacing in Workplane.rarray
• add __iter__ to Workplane
• add export to:
  • Workplane
  • Shape
  • Assembly
  • Sketch
• extend Sketch.moved
• make Sketch._selection optional, i.e. no selection and nothing selected are two different states now
• tests
• docs

---

Some notes:

• Should we add another state to cq.Sketch e.g. selection: Optional[List[SketchVal]]. This way it would be possible to differentiate between selection was not performed/reset and nothing was selected. -> After some experimentation I did go for this change.
• I removed wires, it seems that they were not needed.

---

Quite some scope-creep but a lot of quality-of-life improvements.

[codecov]

Codecov Report

Attention: Patch coverage is 99.60784% with 1 line in your changes missing coverage. Please review.

Project coverage is 95.21%. Comparing base (8ea37a7) to head (b2f780f).
Report is 9 commits behind head on master.

Files with missing lines	Patch %	Lines
cadquery/occ_impl/exporters/__init__.py	90.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1633      +/-   ##
==========================================
+ Coverage   94.96%   95.21%   +0.24%     
==========================================
  Files          28       27       -1     
  Lines        6322     6560     +238     
  Branches     1292     1402     +110     
==========================================
+ Hits         6004     6246     +242     
- Misses        192      193       +1     
+ Partials      126      121       -5     

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---

🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests

[adam-urbanczyk]

Quite some goodies, e.g.

import cadquery as cq

s1 = cq.Sketch().rect(1,1).vertices().fillet(0.2).reset()
s2 = cq.Sketch().rect(0.5,0.5).vertices().fillet(0.1).reset()

s3 = s1 - s2 # sketch bool ops

w = (
     cq.Workplane()
     .placeSketch(s1, s2.moved(z=1)) # better Sketch moved
     .loft()
     .faces('>Z')
     .extrude(1) # direct extruding of faces
     .faces('>Z').workplane()
     .eachpoint(s2.wires().offset(-0.1,mode='r').reset().val()) # val() for Sketch
     .cutThruAll()
)

w.export('out.brep') # unified export method for Workplane, Sketch and Assembly

[jmwright]

Thanks for all the work on this @adam-urbanczyk !

[lorenzncode]

I've tested the new features (at least most of them). It looks great with nice usability improvements too. I found a few doc issues/typos.

[adam-urbanczyk]

@lorenzncode I think I solved all the issues, could you take another look?

[lorenzncode]

Thanks @adam-urbanczyk !