Mitring fixed
Removed repeated last point in points
Began adaptations to make algorithms create loop for lines
Fixed denominator=zero error
point calculations now allow accomodate loop (but loop is not currently drawn correctly)
Added render groups to avoid line_loops being connected during batching
Removed prints
Commented out some vector drawing
increased line width
Simple triangle rendering to fill thick lines
added drawLine function that takes two points and a colour
Set normalisation of drawVector to false by default
East rounded corners now works
Commented out swathes of code while working
Fiddled with parameters