add accessor to Celestial
Fix constness in Barycentre
Implement barycentric corotating frame
Fix constness in Barycentre
Merge branch 'body-accessor' into barycentric-rendering
Merge branch 'fix-constness' into barycentric-rendering
how will it fail?
Sort of works
Revert "Fix constness in Barycentre"

This reverts commit e6f99ad8f5112b5d2c978cc59f0f763eca420d77.
Merge plot-trajectories after pleroy's review.
Merge branch 'plot-trajectories' into barycentric-rendering
mergez la vache!
a piece of paper.
typos and a remark.
Merge pull request #251 from eggrobin/doc-drafts

A piece of paper.
script and ignore
Add property sheet
use property sheet
.
1980 called, they want their macros back