v1.5.0

• Added "plot" function to plot graphs
• Made several existing functions work on arrays
• Added built-in variable "x"
• Added "time" function
• Added "pingpong" function
• Added CSS overrides (see readme)
• Fix not starting always on top
• Modernized 6-years-old code
• Added build pipeline
• Updated dependencies
• Removed some dependencies

See the cheat-sheet for usage examples for the newly-added functions