Problem: so far, these names have not been conveyed.
But after the net IDs changed in the LVS DB (renumbering),
the names should be retained. Otherwise it is difficult to
relate log level entries or Spice netlists to them.
* Fixed issue-1011 by using single-point polygons for texts in deep mode. Tests need fixing.
* Updated tests (text become a single point)
* Added test for issue-1011
* same_nets! method for strong matching
* same_nets and same_nets! except glob pattern to circuits and nets
* both observe case sensitivity
* helper functions for case sensitivity Netlist#is_case_sensitive?, Netlist#case_sensitive=
* Netlist#nets_by_name to get nets from pattern