Added support for mouseup and mousedown event support

[lihan]

Added support for mouseup and mousedown event support.
This fixed that some dropdown plugin relies on mouseup and mousedown event, and it doesn't work in fastclick.

[matthew-andrews]

Shoudn't that be the other way around? So like this:

• mousedown
• mouseup
• click

Instead of:

• mouseup
• mousedown
• click

[See here: http://jsbin.com/qanitu/1/edit?js,console,output]

Also there seems to be a slight whitespace issue.

(I've created a pull request into your pull request to fix these things - lihan#1)

[vogdb]

@matthew-andrews @lihan Please look at the update. Please lets not have the same long-running story here as we had with #103.

[matthew-andrews]

Thanks for the reminder @vogdb. @lihan I've created a PR into your PR that merges the changes from master so that this PR might be mergeable would you be able to review:-
https://github.com/lihan/fastclick/pull/2/files?w=false

[vogdb]

@lihan started this PR to make changes faster than #103 but instead we have another long-running PR 😆
@matthew-andrews I'm afraid of asking. How can we make these changes go alive? Should I start another PR to finish this fuss?

[matthew-andrews]

@vogdb I've created a new one that's mergeable - #308