Incorrect use of '=' operator.

[bardo84]

Hi,

Thanks for sharing your work!
despite being deprecated, is there any chance to revive the code?
I get:

`Error using ExprParser
Error: File: ExprParser.m Line: 61 Column: 29
Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality,
use '=='.

Error in runme (line 4)
p = ExprParser()`