run tests in the browser using e.g. zuul

see https://github.com/Level/abstract-leveldown/pull/93 (similar setup to what memdown does)

[ralphtheninja]

Shall we officially drop IE9?

I wouldn’t mind dropping it.

That still leaves IE10, which also doesn’t support const.

We can just drop const. But maybe we have problems with const in other modules?

[vweevers]

@ralphtheninja It turns out that you can have only 1 subaccount, and it isn’t public. Not all that useful.

So we’ll need separate Sauce Labs accounts for each repo. We can however reuse our gmail address, with aliases. E.g. for the memdown account we’ll use leveldb.org+memdown@, for abstract-leveldown we use leveldb.org+abstract.leveldown@, etc.