Force uppercase SQL keywords

[rinu]

I don't see any benefit to anyone ever having lowercase keywords.

Not all reserved words are detected correctly in this project. A simple regex is simple but it lacks context. But so what, if it's a field name, put ticks around it.

Closes #73

[derrabus]

How does this PR relate to #73?

[rinu]

How does this PR relate to #73?

This is much simpler. No options to argue about. If accepted, it would replace #73.

[greg0ire]

From #73:

This adds a new optional third parameter to the format method, $forceUppercase which defaults to false to maintain backwards compatibility.

I don't think we should consider changing case as breaking compatibility.

[rinu]

I don't see the benefit of keeping compatibility in this case.

[greg0ire]

I'm not saying we should not keep compatibility, I'm saying that we should consider that we are keeping it: a change in case should IMO be considered compatible.

[SenseException]

a change in case should IMO be considered compatible.

I haven't worked with a SQL dialect yet that was case sensitive.

[greg0ire]

Thanks @rinu !