* 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