= http: Refactor internal Uri implementation class construction.
= can: prevent NPE when dispatching response to closed connection, fixes #387

Before using the actorContext, it is checked that it has not become null.
= docs: import 1.1-M8 documentation and expect nightly build to deploy the rest of documentation, fixes #422
= docs: add section about how to edit documentation
= build: expect `sphinx-build` at well-known locations
= docs: add documentation for ParameterDirectives
= docs: when extracting definition lines try not to match method name prefixes as well
+ can: add `spray.can.client/server.incoming-auto-chunking-threshold-size`, fixes #189

The setting is still disabled per default because it is not yet clear
how the higher-level API are going to deal with it generally.
= can: add streaming file upload code to simple-http-server example

This is the most basic form working with the current version of the
chunking message protocol. Once we have implemented registering for
chunked messages the `chunkHandlers` map can go.
+ httpx: add support for specifying an optional log level with logRequest and logResponse

The default log level is still DEBUG but now you can specify your own level. this was already exposed by logValue but had not bubbled up to logRequest/logResponse.
= can: always produce chunks if Content-Length >= autoChunkingThreshold

I.e. also when the complete body is already available. Thanks, Bob Ngu for
the fix.
site: add redirect from parboiled.org to github wiki
Merge branch 'master' of github.com:spray/spray
Merge pull request #439 from agemooij/httpx-log-improvements

+ httpx: add support for specifying an optional log level with logRequest and logResponse
Merge pull request #438 from jrudolph/wip/document-parameter-directives

documentation for parameter directives
! util: Swap Duration.Undefined by Duration.Inf, fixes #440

When confugarion is read using the pimped getDuration method the
mapping for "infinite" was Duration.Undefined, but Duration.Undefined !=
Duration.Undefined, which makes comparing any internal settings representation
containing a Duration in a sure failure. Duration.Inf make a lot more sense.
= can: improve ByteStringRendering perf by replacing ByteStringBuilder with custom logic, closes #444
Merge pull request #449 from spray/wip/better-bytestringrendering

= can: improve ByteStringRendering
= http: seal `ModeledHeader` parent class of predefined HTTP header model classes
! can: introduce dedicated exceptions for connection failure and request timeout for host-level API