Parse numbers from string by default and add 'noParseNumbers' option …

[ralphilius]

…as recommended in #7

[adriens]

Hi guys, any chance to get this feature soon please ?

[adriens]

I've tested the patch and it does perfectly does the job, thanks a lot @ralphilius 👍

[adriens]

Please merge this PR so i can switch back to this repo 🙏

[rcourtna]

Works well for my needs, thanks!

[dandaka]

Works bad with documents with non-English locale. We use "," decimal delimiter in Russia. When I use your updated script 1295,84335 becomes 129584335.

[fghber]

@ralphilius Thank you for sharing! I've applied your change and noticed that blank cells become #NUM! error.
This can be avoided using Number(data[row][column]) instead of parseFloat(data[row][column]) to do the actual conversion. This works better for me and might be helpful for others as well.