Cannot use newer version of apollo-client

[bgentry]

I attempted to upgrade the addon's core dependencies here: https://github.com/bgentry/ember-apollo-client/compare/upgrade-apollo-client

Unfortunately, that breaks the tests, resulting in the following console errors:

apollo-client.amd.js:47Uncaught SyntaxError: Unexpected token import
index.js:1Uncaught ReferenceError: define is not defined
    at index.js:1
app.js:1Uncaught ReferenceError: define is not defined
    at app.js:1
query-and-unsubscribe-test.js:1Uncaught ReferenceError: define is not defined
    at query-and-unsubscribe-test.js:1
tests?hidepassed:39 Uncaught ReferenceError: Ember is not defined
    at tests?hidepassed:39
test-loader.js:21Uncaught ReferenceError: require is not defined
    at HTMLDocument.<anonymous> (test-loader.js:21)

To upgrade, I ran:

yarn upgrade apollo-client graphql-tag graphql-tools graphql

I was able to narrow it down to the fact that it breaks as soon as apollo-client is upgraded beyond v0.6.0 (to v0.7.x or beyond).

My assumption is that this is due to the Apollo Client changes to use UMD and ES6 modules, which were released literally the day after this addon was first published.

I don't have time to dig into this any further right now, but if anybody feels inclined to take a crack at it, be my guest 😃

[bgentry]

This was resolved by #12. I'll be releasing a new version of this addon with apollo-client v0.10.1 shortly.