make Axis.position and Axis.direction properties

[snoyer]

The .position and .direction members of the Axis class are currently copies made at initialization which means that they are modifiable but not kept in sync with the underlying .wrapped object.

axes = [Axis.Y for _ in range(10)]
for i, a in enumerate(axes):
    a.position += (i, 0, 0)  # translating each axis
show_all()  # all axes show at (0,0,0)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.73%. Comparing base (8b53e1a) to head (e0e5d0d).
Report is 12 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #905      +/-   ##
==========================================
+ Coverage   96.72%   96.73%   +0.01%     
==========================================
  Files          32       32              
  Lines        9339     9379      +40     
==========================================
+ Hits         9033     9073      +40     
  Misses        306      306              

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[gumyr]

Thank you!