Update minimum MATLAB version for MP-Core functionality from R2016b (…

…9.1) to R2016a (9.0).

Tested R2016a successfully on Windows WITHOUT Optimization Toolbox and macOS WITH Optimization Toolbox.

README.md

@@ -23,7 +23,7 @@ System Requirements
 -------------------
 
 For all features, including those based on the new MP-Core:
-*   [MATLAB][3] version 9.1 (R2016b) or later, or
+*   [MATLAB][3] version 9.0 (R2016a) or later, or
 *   [GNU Octave][4] version 6.2 or later
 
 Legacy features only (from 7.1 and earlier) are also available on:

docs/src/MATPOWER-manual/MATPOWER-manual.tex

@@ -539,7 +539,7 @@ \subsection{System Requirements}
 \label{sec:sysreq}
 To use all features of \matpower{} \mpver{}, including those based on the new \mpcore{}, you will need:
 \begin{itemize}
-\item \matlab{}\textsuperscript{\tiny \textregistered} version 9.1 (R2016b) or later\footnote{\matlab{} is available from The MathWorks, Inc. (\url{https://www.mathworks.com/}). \matlab{} is a registered trademark of The MathWorks, Inc. \matpower{}~7.1 required \matlab{}~7.5 (R2007b), \matpower{}~7.0 required \matlab{}~7.3 (R2006b), \matpower{}~5 and \matpower{}~6 required \matlab{}~7 (R14), \matpower{}~4 required \matlab{}~6.5 (R13), \matpower{}~3.2 required \matlab{}~6 (R12), \matpower{}~3.0 required \matlab{}~5 and \matpower{}~2.0 and earlier required only \matlab{}~4. }, or
+\item \matlab{}\textsuperscript{\tiny \textregistered} version 9.0 (R2016a) or later\footnote{\matlab{} is available from The MathWorks, Inc. (\url{https://www.mathworks.com/}). \matlab{} is a registered trademark of The MathWorks, Inc. \matpower{}~7.1 required \matlab{}~7.5 (R2007b), \matpower{}~7.0 required \matlab{}~7.3 (R2006b), \matpower{}~5 and \matpower{}~6 required \matlab{}~7 (R14), \matpower{}~4 required \matlab{}~6.5 (R13), \matpower{}~3.2 required \matlab{}~6 (R12), \matpower{}~3.0 required \matlab{}~5 and \matpower{}~2.0 and earlier required only \matlab{}~4. }, or
 \item GNU Octave version 6.2 or later\footnote{GNU Octave \cite{octave} is free software, available online at \url{https://www.gnu.org/software/octave/}. \matpower{}~7 required Octave~4, \matpower{}~5 and \matpower{}~6 required Octave~3.4, \matpower{}~4 required Octave~3.2.}
 \end{itemize}
 Legacy features only (from \matpower{}~7.1 and earlier) are also available on: