channel does not work with Bluebird promises

[druska]

It seems like freezing the Promise object creates an issue when native promises are replaced with Bluebird promises.

Reproduction:
https://gist.github.com/druska/94fcf4bbdb8588391040b20915ed9bab

Result:

node --trace-warnings nodeguy_bluebird_issue.js

(node:86229) TypeError: Cannot assign to read only property '_promise0' of object '[object Object]'
    at Promise._addCallbacks (/private/tmp/node_modules/bluebird/js/release/promise.js:396:24)
    at Promise._then (/private/tmp/node_modules/bluebird/js/release/promise.js:270:16)
    at Promise.then (/private/tmp/node_modules/bluebird/js/release/promise.js:125:17)
    at process._tickCallback (internal/process/next_tick.js:188:7)
    at Function.Module.runMain (module.js:686:11)
    at startup (bootstrap_node.js:187:16)
    at bootstrap_node.js:608:3
(node:86229) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
    at emitWarning (internal/process/promises.js:78:15)
    at emitPendingUnhandledRejections (internal/process/promises.js:95:11)
    at process._tickCallback (internal/process/next_tick.js:189:7)
    at Function.Module.runMain (module.js:686:11)
    at startup (bootstrap_node.js:187:16)
    at bootstrap_node.js:608:3
/private/tmp/node_modules/bluebird/js/release/promise.js:294
    this._bitField = this._bitField | 33554432;
                   ^

TypeError: Cannot assign to read only property '_bitField' of object '[object Object]'
    at Promise._setFulfilled (/private/tmp/node_modules/bluebird/js/release/promise.js:294:20)
    at Promise._fulfill (/private/tmp/node_modules/bluebird/js/release/promise.js:633:10)
    at Promise._resolveCallback (/private/tmp/node_modules/bluebird/js/release/promise.js:432:57)
    at /private/tmp/node_modules/bluebird/js/release/promise.js:484:17
    at Object.resolve (/private/tmp/node_modules/@nodeguy/channel/lib/index.js:17:9)
    at Immediate.processOrders [as _onImmediate] (/private/tmp/node_modules/@nodeguy/channel/lib/index.js:64:15)
    at runCallback (timers.js:789:20)
    at tryOnImmediate (timers.js:751:5)
    at processImmediate [as _immediateCallback] (timers.js:722:5)

[NodeGuy]

Thank you for the reproduction. I've fixed this in the beta branch and will publish it soon.