Add noLeadingZeroes argument to latexTable(), and make it TRUE by default

[jbullock35]

When formatNumbers is TRUE in a call to latexTable(), leading zeroes are eliminated. For example, "0.67" becomes ".67". But some people don't like this behavior. So add a noLeadingZeroes argument to the function. When TRUE, the default, it will function as it does now. When FALSE, leading zeroes won't be touched.

And: if we implement noLeadingZeroes, do we still need the formatNumbers argument at all? Or would the combination of noLeadingZeroes and decimalPlaces cover everything? (formatNumbers may induce some rounding, but that should probably be a default; the user needn't have control over that in latexTable().)

[jbullock35]

We shouldn't eliminate the formatNumbers argument. See ?latexTable on this argument: formatNumbers rounds numbers, pads out numbers with trailing zeroes, and removes leading zeroes. It's not obvious that the padding function should be covered by a decimalPlaces argument. Better to leave formatNumbers as is.

[jbullock35]

Add an option for the entire package, and make the function read that option – just as I do with regTable and digits.