Siepic-ebeam-pdk

minor fixes

Updates:

- new PCell ebeam_dc_halfring_straight with TE/TM support
- updated CML ebeam_dc_halfring_straight with TE/TM support, including automated generation of S-Parameters using FDTD, and Monte Carlo.
- fixes to GSiP CML Ring Modulator, Ring Filter

Lots of updates between Nov 2016 and March 2017:

Major:

- support for multiple technologies
- created a GSiP technology
- addition of support for electrical connections, export to INTERCONNECT
- GSiP library of fixed and PCells, including Ring Modulator, detector, edge coupler
- GSiP CML library in INTERCONNECT
- GSiP example of transceiver

Minor:
- fixes to ebeam_dc_halfring_straight and ebeam_dc_halfring_straight_te1550
- fixes to waveguide
- auto-save before simulations
- fixes for MC warnings in INTERCONNECT, when called from KLayout
- fixes for INTERCONNECT circuit scaling
- Process Control Module (PCM) layout and Matlab analysis scripts

Updates:
- New PCells: spiral, waveguide bump
- fixes for some of the compact models.
- updates to the Monte Carlo simulation.
- area calculation script in Ruby added
- process control module (PCM) added
- adding capability to Ignore optical IOs in simulations: added as an option in the Laser

fixes

- bug fixes: fix for Monte Carlo with the shortened spice netlist feature.
- support for different pin lengths