Allow spaces in a vector literal

[adam-urbanczyk]

Will resolve #443

[codecov]

Codecov Report

Merging #445 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #445   +/-   ##
=======================================
  Coverage   93.58%   93.58%           
=======================================
  Files          25       25           
  Lines        5316     5316           
  Branches      554      554           
=======================================
  Hits         4975     4975           
  Misses        215      215           
  Partials      126      126           

Impacted Files	Coverage Δ
cadquery/selectors.py	99.09% <ø> (ø)
tests/test_selectors.py	100.00% <ø> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c7b7e95...a8d13c9. Read the comment docs.

[jmwright]

Looks good, thanks @adam-urbanczyk