Golang implementation: Channels and read file in chunks

[pjgg]

NOTE: The challenge has been closed for new submissions. No new pull requests for adding submissions are accepted at this time.

The final leaderboard has been published on Feb 4.

Ouch! Okay, but I developed this just for fun. Could we still merge my solution, even if it’s not on the leaderboard? I’ll add a README explaining that my submission wasn´t submitted on time.

Check List:

• [ ] You have run ./mvnw verify and the project builds successfully
• [X] Tests pass (./test.sh <username> shows no differences between expected and actual outputs)
• [X] All formatting changes by the build are committed
• [X] Your launch script is named calculate_average_<username>.sh (make sure to match casing of your GH user name) and is executable
• [x] Output matches that of calculate_average_baseline.sh
• [ ] For new entries, or after substantial changes: When implementing custom hash structures, please point to where you deal with hash collisions (line number)

• Execution time: 1min and 15 sec
• Execution time of reference implementation: