Add docs about new dynimcTyping options

docs.html

@@ -402,7 +402,7 @@ var csv = Papa.unparse({
 									<code>dynamicTyping</code>
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-									If true, numeric and boolean data will be converted to their type instead of remaining strings. Numeric data must conform to the definition of a decimal literal. (European-formatted numbers must have commas and dots swapped.)
+									If true, numeric and boolean data will be converted to their type instead of remaining strings. Numeric data must conform to the definition of a decimal literal. European-formatted numbers must have commas and dots swapped. If also accepts an object or a function. If object it's values should be a boolean to indicate if dynamic typing should be applied for each column number (or header name if using headers). If it's a function, it should return a boolean value for each field number (or name if using headers) which will be passed as first argument.
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