Don't apply acceleration settings to travel moves

lib/Slic3r/ExtrusionPath.pm

@@ -93,6 +93,13 @@ sub endpoints {
 
 sub is_printable { 1 }
 
+sub is_perimeter {
+    my $self = shift;
+    return $self->role == EXTR_ROLE_PERIMETER
+        || $self->role == EXTR_ROLE_EXTERNAL_PERIMETER
+        || $self->role == EXTR_ROLE_CONTOUR_INTERNAL_PERIMETER;
+}
+
 sub is_fill {
     my $self = shift;
     return $self->role == EXTR_ROLE_FILL