Release 1.5.1

• Update README (8da94b8)
• Update README (9ebafb4)
• Update README (7b5f3e5)
• Update README (db8d1f0)
• Refactoring (fd7150e)
• Simplify input function titles generation (d79aa0f)
• Update comments (e5f78a9)
• Refactoring (19deb0b)
• Rename variables (6b3789b)
• Remove comment (e62f14c)
• Refactoring (0bf61e0)
• Rename file (ac304a8)
• Refactoring (3d741fa)
• Refactoring (850e31c)
• Make tests run faster locally (6b59989)
• Add a comment (872b3ae)