Release 0.4.1

[maypink]

PRs to include in release:

• GOLEM API (GOLEM API #251)
• Custom selection (Add custom selection #249)
• Sequential Tuner Fix (Fix sequential #248)
• Set random seed for Integration Tests (Set random_seed for stohastic integration tests #217)
• Parallel Optimizer (Parallel optimizer #247) 🎲
• Minor fixes for BAMT (Minor fixes for BAMT users #169)
• Mutation Operator Fix (Fix mutation operator #238)
• Crossover for graph with cycles (Crossover for graphs with cycle #231)