PsySH v0.4.2

• Code style fixes (Thanks @GrahamCampbell and @Markcial!)
• Better composer, build configuration (Thanks @GrahamCampbell!)
• Update dev dependency versions
• Improve autocomplete (Thanks @Markcial!)
• Fix adding tab completion matchers via config
• Remove duplicate properties when dumping Exceptions
• Add more info when dumping streams and other resources
• Fix bug when pressing Ctrl+D without readline enabled
• Fix a warning when invoking PsySH via eval(\Psy\sh()) outside a class context
• Validate static method calls, preventing a few more types of fatal errors