0.4.2

• Improved Getting Started Guide with a new interface of providing functions instead of implementing the problem class
• New Algorithm: PSO for single-objective problems
• New Loop-wise Execution: The algorithm object can be used directly by calling its next method
• New Tutorial: An implementation of checkpoints to resume runs
• New Test Problems Suites (Constrained): DAS-CMOP and MW (contributed by cyrilpic)
• New Operators for Permutations: OrderCrossover and InversionMutation and usage to optimize routes for the TSP and Flowshop problem (contributed by Peng-YM )
• New Crossover: Parent Centric Crossover (PCX) which is known to work well on problems where some variables have dependencies on each other
• Bugfix: Remove evaluation calls in Problem class during print