Add image processing functions into top namespace

[andrewpaulreeves]

No description provided.

[codecov-io]

Codecov Report

Merging #23 into master will increase coverage by 0.06%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #23      +/-   ##
==========================================
+ Coverage   69.01%   69.07%   +0.06%     
==========================================
  Files          21       21              
  Lines         994      996       +2     
==========================================
+ Hits          686      688       +2     
  Misses        308      308

Impacted Files	Coverage Δ
aotools/image_processing/_image_processing.py	28.57% <ø> (ø)
aotools/image_processing/__init__.py	100% <ø> (ø)	⬆️
aotools/astronomy/_astronomy.py	27.27% <100%> (+3.46%)	⬆️
aotools/__init__.py	100% <100%> (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 af6324d...4800e6a. Read the comment docs.

[matthewtownson]

Sorted!