Adding to the clock functionality

As he added functionality to the clock, Pin Hua ran into a problem where the extensions added a lot to the size of the program, and it was no longer able to fit onto the micro:bit. He then worked to remove one of the libraries and implemented the functionality himself (which ended up a lot smaller).
The clock now plays a sound every quarter of an hour, and turns on the LED light every minute.
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This is the latest version of his code:
LCD Clock
Made with ❤️ in Microsoft MakeCode for micro:bit.

I've started on making the housing in .svg format, and this is my design now: