Pass kwargs from EventletHTTPTransport to super class

This makes Eventlet transport support configurable timeout (and possibly
some other transport parameters).
fixes #502
Merge pull request #503 from ldrumm/SanitizeProcessorsFail

fixes #502
Merge pull request #487 from smarkets/master

Pass kwargs from EventletHTTPTransport to super class
5.1.0
Change Unable to capture event message

When you get a RateLimited is a bit difficult to know what happend because log will only say "Unable to capture event: None" because message on RateLimited does not exists.
let flask wrapper configure tags via SENTRY_TAGS
Fix circular import on Django 1.6?
5.1.1
Swtich from resp.close() for resp.release() for processing keep-alive connections (requred for aiohttp 9.0+)
aiohttp transport: add timeout parameter
Merge pull request #507 from emidln/master

let flask wrapper configure tags via SENTRY_TAGS
Merge pull request #510 from asvetlov/master

Aiohttp transport fixes
Merge pull request #506 from jaysonsantos/patch-1

Change Unable to capture event message
Client method to switch the transport dsn

This pull request adds `Client.set_dsn()` to be able to switch the client's transport when needed.

An example for this would be in a middleware where the Sentry server needs to be changed depending on the current site object.
Merge pull request #512 from Kronuz/patch-1

Client method to switch the transport dsn
fix typo in docstring

Because I care, because I care.
Merge pull request #517 from whit537/patch-1

fix typo in docstring