Rename fields in the JSON response for more coherence

[Deuchnord]

BREAKING CHANGE: the fields "details" and "ephemerides" have been switched.

Q	A
Bug fix?	no
New feature?	yes
Related issues
Has BC-break	yes
License	GNU AGPL-v3

[codecov]

Codecov Report

Merging #35 into master will increase coverage by 0.2%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master      #35     +/-   ##
=========================================
+ Coverage   77.46%   77.67%   +0.2%     
=========================================
  Files           5        5             
  Lines         324      327      +3     
  Branches       45       45             
=========================================
+ Hits          251      254      +3     
  Misses         62       62             
  Partials       11       11

Impacted Files	Coverage Δ
kosmorrolib/dumper.py	86.07% <100%> (+0.54%)	⬆️

---

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 e49fe96...4029ba9. Read the comment docs.