Merge pull request #65 from SimonStreicher/master

Expanded utils and started on connect function
Removed unused distance_from_nominal function
Small formatting change
Merge branch 'master' of https://github.com/alchemyst/Skogestad-Python

Conflicts:
	utils.py
Applied Pythonic conventions for 'undefined'
Renamed feedback functions
This undoes the breakage introduced by making a new feedback function which didn't work as the old one did, breaking several working examples.
Merge pull request #1 from alchemyst/master

Updating repo
Sage version of Example 5.6

All in my quest to understand RHP zeros...
Merge pull request #66 from bsaaiman/master

Sage version of Example 5.6
Corrected state controllability function

Corrected the calculation of the input pole vectors
Revert "Corrected state controllability function"

This reverts commit 3d41aec796ae495aeceb94792d083c2c5a91a411.
Corrected state controllability in MIMO_Tools

Corrected the calculation of the input pole vectors
Merge pull request #67 from clifford-oliphant/master

Corrected state controllability function in MIMO_Tools
Automatic SISO multiplicative weight determination
Added function to automatically fit a third-order weight to a perturbed plant response. Currently only for SISO and assumes multiplicative uncertainty.
The function runs in perturbed_models as a script on the example system there.