Rework Package_SON
- New-style pin1 indicators
- Remote unnecessary mask expansions
- Make pads roundrect where convenient
- Improve paste layer on HUSON-3-1EP_2x2mm_P1.3mm_EP1.1x1.6mm
- Improve paste layer of EP on WSON-16_3.3x1.35_P0.4mm
- Improve paste layer on Diodes_PowerDI3333-8_UXC_3.3x3.3mm_P0.65mm
- Improve paste layer on Texas_PWSON-N6
See #2637
Edited by kliment