Scripted replacement for qfn-56 7x7 (5.7x5.7 EP)

This footprint is used for cypress MCUs. EP size is at max as this was like it was in the past.

http://www.cypress.com/file/416486/download#page=40

Script PR: https://github.com/pointhi/kicad-footprint-generator/pull/250

QFN-56-1EP_7x7mm_P0.4mm_EP5.7x5.7mm:
  device_type: 'QFN'
  #manufacturer: 'man'
  #part_number: 'mpn'
  size_source: 'http://www.cypress.com/file/416486/download#page=40'
  ipc_class: 'qfn' # 'qfn_pull_back'
  #ipc_density: 'least' #overwrite global value for this device.
  # custom_name_format:
  body_size_x:
    nominal: 7
    tolerance: 0.1
  body_size_y:
    nominal: 7
    tolerance: 0.1
  body_height:
    nominal: 0.55
    tolerance: 0.05

  lead_width:
    nominal: 0.2
    tolerance: 0.05
  lead_len:
    nominal: 0.4
    tolerance: 0.1

  EP_size_x:
    nominal: 5.6
    tolerance: 0.1
  EP_size_x_overwrite: 5.7
  EP_size_y:
    nominal: 5.6
    tolerance: 0.1
  EP_size_y_overwrite: 5.7
  # EP_paste_coverage: 0.65
  EP_num_paste_pads: [4, 4]
  #heel_reduction: 0.1 #for relatively large EP pads (increase clearance)

  thermal_vias:
    count: [5, 5]
    drill: 0.2
    # min_annular_ring: 0.15
    paste_via_clearance: 0.1
    # EP_num_paste_pads: [2, 2]
    #paste_between_vias: 1
    #paste_rings_outside: 1
    EP_paste_coverage: 0.6
    #grid: [1, 1]
    # bottom_pad_size:
    # paste_avoid_via: False

  pitch: 0.4
  num_pins_x: 14
  num_pins_y: 14