Unique for cell array of string

This function 'uniqueStrCell' performs 'unique' for cell array of string.

The built-in 'UNIQUE' function in MATLAB will report errors if the input cell contains different types of variables.
% This function 'uniqueStrCell' performs 'UNIQUE' for cell array of string.
% The output cell 'out' will include only string cells and numeric cells converted to strings
% , and exclude NaN and empty cells.
% Example:
% inputStrCell={'ek','wekf', 29, NaN, [],'we'};
% out = uniqueStrCell(inputStrCell);
% >> out = {'ek' 'we' 'wekf' '29'}
%
% Acknowledgement:
% This function greatly benefits from Jan Simon's comments. The previous version was errorful.
% See 'unique' for more information