Merge pull request #12999 from fegorsch:improve-circle-detector
authorAlexander Alekhin <alexander.a.alekhin@gmail.com>
Tue, 6 Nov 2018 18:40:55 +0000 (18:40 +0000)
committerAlexander Alekhin <alexander.a.alekhin@gmail.com>
Tue, 6 Nov 2018 18:40:55 +0000 (18:40 +0000)

Trivial merge