v4.13

• Added 8 new challenges:

3.10 "Isosceles Triangle by Tangent Points"
6.10 "Symmetry of Four Lines"
8.5 "Triangle Cleaver"
8.6 "Torricelli Point"
8.7 "Circle Equidistant from Four Points"
11.9 "Point Farthest from Angle Sides"
12.6 "Equilateral Triangle by Centroid and Two Points"
13.7 "Line Reflection"

• Updated the number of moves for minimum solutions:

15.4 "Three Equal Segments"
15.8 "Line-Circle Intersection*"

• Fixed bugs