parse abr from PS 2018, restore xmp injection, check uniform hash collision

src/abr.cpp

@@ -27,6 +27,7 @@ bool ABR::section_desc()
             LOG("%s", l.c_str());
         }
     }
+    snap();
     return true;
 }
 
@@ -167,7 +168,7 @@ std::vector<std::shared_ptr<Brush>> ABR::compute_brushes(const std::string& path
                 b->m_jitter_scale = jitter_size->value<UnitFloat>("jitter") * 0.01f;
                 // TODO: p->value<UnitFloat>("minimumDiameter") * 0.001f; // minimum size
                 if (jitter_size->value<Integer>("bVTy") == 2)
-                    b->m_tip_size_pressure;
+                    b->m_tip_size_pressure = true;
             }
 
             auto jitter_angle = p->get<Descriptor>("angleDynamics");