Merge branch 'tests' of https://github.com/ahkab/ahkab
DOC: update example to the latest ahkab
Make internal functions internal. sweep defaults to LOG. DOC.
DOC: add more.
Bump version to 0.11
Add CHANGELOG entries for v 0.11
Update readme to v 0.11
Update to the sympy zeros() syntax

Numpy's style syntax zeros((x,y)) was deprecated in commit
c2e608d6f95191cff25336d3c51653555b28b02e.

The current syntax is:

zeros(r, c=None)

If c is None, the matrix will be **square**.
Move matplotlib to the optional dependencies, require scipy
Fix typo
DOC: netlist syntax improvements
Remove the --eps option.
Fix entry point.
DOC: remove useless module docstring.
DOC: add doc for PSS module.
Remove unused doc/default.rst file.
Move utility functions to the utilities module.
DOC: small improvements.
Merge branch 'master' of https://github.com/ahkab/ahkab into py3

Conflicts:
	ahkab/__main__.py
	ahkab/bfpss.py