Improved MSI filter algorithm.
EPD-16 MSI message is visible on route, though it needs more work when drawing steep slopes.
Merge branch 'master' of https://github.com/dma-enav/EPD into improved_msi_filtering
Removed comments and console prints.
EPD-16 Further improved MSI visibility on route leg.
EPD-16 Further improved the MSI message filter on route legs.
EPD-16 MSI are now show correctly when drawing vertical lines.
EPD-16 Removed route leg point graphic.
Removed unused variable.
Merge branch 'improved_msi_filtering'