#2 Added LSerializible interface.
#2 Removed unnecessary abstraction layer in serialization module. Added Serializible interface.
#2 Deserialization no longer allocates empty soup in case of no saved properties.
#2 LMath: move splines to separate classes, implement serialization.
#2 LMath: Add function to test monotonic property of numeric array. Add check if x values of spline are strictly increasing.
#2 LFlags: Add Cond function to avoid explicit bool to int conversions.
#2 Fix compilation errors