old_contents: # -*- coding: utf-8 -*-
  
  """Kernel of Pyslvs.
  
  This kernel can work without GUI.
  
  Modules:
  + Solver:
      + parser
      + tinycadlib
          + Sketch Solve solver
      + triangulation
  + Number synthesis:
      + number
  + Structure Synthesis:
      + atlas
  + Dimensional synthesis:
      + planarlinkage
      + rga
      + firefly
      + de
  
  Dependents:
  + lark-parser
  + pygments (optional: provide highlighting)
  """
  
  __author__ = "Yuan Chang"
  __copyright__ = "Copyright (C) 2016-2019"
  __license__ = "AGPL"
  __email__ = "pyslvs@gmail.com"
  __version__ = (19, 2, 0, 'release')
  
  from .expression import (
      get_vlinks,
      VJoint,
      VPoint,
      VLink,
  )
  from .bfgs import vpoint_solving
  from .tinycadlib import (
      Coordinate,
      plap,
      pllp,
      plpp,
      pxy,
      vpoint_dof,
      expr_parser,
      expr_solving,
      data_collecting,
  )
  from .verify import Verification
  from .triangulation import vpoints_configure
  from .planar_linkage import Planar
  from .rga import Genetic
  from .firefly import Firefly
  from .de import Differential
  from .number import number_synthesis, contracted_link
  from .graph import (
      Graph,
      link_assortments,
      contracted_link_assortments,
  )
  from .planar_check import is_planar
  from .graph_layout import external_loop_layout
  from .atlas import topo
  from .expression_parser import (
      color_names,
      color_rgb,
      parse_params,
      parse_pos,
      parse_vpoints,
      parse_vlinks,
      edges_view,
      graph2vpoints,
      HAS_PYGMENTS,
  )
  from .example import example_list
  from .collection import collection_list
  if HAS_PYGMENTS:
      from .expression_parser import PMKSLexer
  
  __all__ = [
      '__version__',
      'Genetic',
      'Firefly',
      'Differential',
      'Coordinate',
      'plap',
      'pllp',
      'plpp',
      'pxy',
      'expr_parser',
      'expr_solving',
      'data_collecting',
      'get_vlinks',
      'VJoint',
      'VPoint',
      'VLink',
      'vpoint_solving',
      'Planar',
      'number_synthesis',
      'contracted_link',
      'is_planar',
      'external_loop_layout',
      'topo',
      'Graph',
      'link_assortments',
      'contracted_link_assortments',
      'vpoints_configure',
      'vpoint_dof',
      'color_names',
      'color_rgb',
      'parse_params',
      'parse_pos',
      'parse_vpoints',
      'parse_vlinks',
      'edges_view',
      'graph2vpoints',
      'PMKSLexer',
      'example_list',
      'collection_list',
      'Verification',
  ]
  
new_contents: # -*- coding: utf-8 -*-
  
  """Kernel of Pyslvs.
  
  This kernel can work without GUI.
  
  Modules:
  + Solver:
      + parser
      + tinycadlib
          + Sketch Solve solver
      + triangulation
  + Number synthesis:
      + number
  + Structure Synthesis:
      + atlas
  + Dimensional synthesis:
      + planarlinkage
      + rga
      + firefly
      + de
  
  Dependents:
  + lark-parser
  + pygments (optional: provide highlighting)
  """
  
  __author__ = "Yuan Chang"
  __copyright__ = "Copyright (C) 2016-2019"
  __license__ = "AGPL"
  __email__ = "pyslvs@gmail.com"
  __version__ = (19, 3, 0, 'dev')
  
  from .expression import (
      get_vlinks,
      VJoint,
      VPoint,
      VLink,
  )
  from .bfgs import vpoint_solving
  from .tinycadlib import (
      Coordinate,
      plap,
      pllp,
      plpp,
      pxy,
      vpoint_dof,
      expr_parser,
      expr_solving,
      data_collecting,
  )
  from .verify import Verification
  from .triangulation import vpoints_configure
  from .planar_linkage import Planar
  from .rga import Genetic
  from .firefly import Firefly
  from .de import Differential
  from .number import number_synthesis, contracted_link
  from .graph import (
      Graph,
      link_assortments,
      contracted_link_assortments,
  )
  from .planar_check import is_planar
  from .graph_layout import external_loop_layout
  from .atlas import topo
  from .expression_parser import (
      color_names,
      color_rgb,
      parse_params,
      parse_pos,
      parse_vpoints,
      parse_vlinks,
      edges_view,
      graph2vpoints,
      HAS_PYGMENTS,
  )
  from .example import example_list
  from .collection import collection_list
  if HAS_PYGMENTS:
      from .expression_parser import PMKSLexer
  
  __all__ = [
      '__version__',
      'Genetic',
      'Firefly',
      'Differential',
      'Coordinate',
      'plap',
      'pllp',
      'plpp',
      'pxy',
      'expr_parser',
      'expr_solving',
      'data_collecting',
      'get_vlinks',
      'VJoint',
      'VPoint',
      'VLink',
      'vpoint_solving',
      'Planar',
      'number_synthesis',
      'contracted_link',
      'is_planar',
      'external_loop_layout',
      'topo',
      'Graph',
      'link_assortments',
      'contracted_link_assortments',
      'vpoints_configure',
      'vpoint_dof',
      'color_names',
      'color_rgb',
      'parse_params',
      'parse_pos',
      'parse_vpoints',
      'parse_vlinks',
      'edges_view',
      'graph2vpoints',
      'PMKSLexer',
      'example_list',
      'collection_list',
      'Verification',
  ]
  
subject: Update version.