Release v4.11.0

Changes in v4.11.0:

• Serialize several classes for save and loading roadmaps
• use shared pointers to class Problem only. Classes previously storing
  const references to Problem now store const weak pointers. Classes
  that use to take a const reference to problem in the constructor now
  take a const shared pointer.
• Make Path::operator() deprecated: use method Path::eval instead.
• Improve Vmax computation for solid-solid collision
• [ConfigProjector] Add method isSatisfied with input error threshold.