change text-max-angle to accept degrees and convert to radians

include/mbgl/style/style_bucket.hpp

@@ -51,7 +51,7 @@ public:
     float vertical_alignment = 0.5;
     vec2<float> translate {0, 0};
     TranslateAnchorType translate_anchor = TranslateAnchorType::Default;
-    float max_angle_delta = M_PI;
+    float max_angle_delta = 45.0f;
     float min_distance = 250.0f;
     float rotate = 0.0f; // what is this?
     float padding = 2.0f;

src/text/placement.cpp

@@ -273,7 +273,7 @@ void Placement::addFeature(TextBucket &bucket, const std::vector<Coordinate> &li
         GlyphBoxes boxes;
 
         getGlyphs(glyphs, boxes, anchor, info.translate, shaping, face, fontScale, horizontal, line,
-                  info.max_angle_delta, info.rotate);
+                  info.max_angle_delta * (M_PI/180), info.rotate);
         PlacementProperty place = collision.place(boxes, anchor, anchor.scale, maxPlacementScale,
                                                   info.padding, horizontal, info.always_visible);
         if (place) {