New Features and Improvements

• Added Stdin Support in #22
• Added _proto_ variable in #23
• Significant speed improvements with very large lists in #30

Bug Fixes

• Fixed empty port, exclusion or domain name throwing exception in #18
• Fixed empty target list bug in #35
• Fixed broken setup when client only using Python 3.7 in #21
• Added checks for output folder existence in #23
• Fixed realports replacement not consistently working in #27
• Removed [thread] outputs when -silent flag is used in #29
• Fixed trimmed spaces bug in #33