Expand contractions before slugging

[passcod]

Related to #105, but a different approach. Instead of omitting apostrophes and creating possibly-confusing words like wont or well, instead expand the contractions (opt-in?), thus creating do-not, will-not, we-will, etc.

From the readme, this example:

slug = getSlug('Don\'t drink and drive', {
	    titleCase: true
	});
console.log(slug); // Output: Don-t-Drink-And-Drive

would instead be:

slug = getSlug('Don\'t drink and drive', {
	    titleCase: true,
        expandContractions: true
	});
console.log(slug); // Output: Do-Not-Drink-And-Drive

The package contractions can be used for English.

I think there might be some use for this in French as well, but not as useful nor common. I'm not familiar enough with other languages.

[pid]

I think the better approach is to use the contraction module as needed and then pass it on to SpeakingURL. I don't want to inflate SpeakingURL; the goal is to use it in the browser -- size matters.

[passcod]

I guess? But also, contractions add <1K to the minified+compressed size, while if one really wanted to get the size down, they'd remove all the languages they didn't need and save about 3-4K. But I understand the argument.

[pid]

while if one really wanted to get the size down, they'd remove all the languages they didn't need and save about 3-4K. But I understand the argument.

You are right, but a module should do one thing right, and this feature would open multiple other tasks for other languages as well. So it's best, to use the contractions beforehand of speakingurl. Better make a new function and merge this two tasks.

So for now, I will close this request - sorry.