Bleeding-rez

Addressed Issues

* 528

Notes

Two new features are added in this release:

Override any config setting with an env-var. For any setting "foo", you can now set the env-var
REZ_FOO_JSON to a JSON-encoded string. This works for any config setting. Note that the existing
REZ_FOO env-var overrides are still in place also; if both are defined, REZ_FOO takes precedence.
This feature means you can now override some of the more complicated settings with env-vars, such as
package_filter.

Track context creation and sourcing via AMQP. Messages are published (on a separate thread) to the
nominated broker/exchange/routing_key. You have control over what parts of the context are published.
For more details: https://github.com/nerdvegas/rez/blob/master/src/rez/rezconfig.pyL414

The embedded simplejson lib was removed. The native json lib is used instead, and for cases where loads-without-unicoding-everything is needed, utils/json.py now addresses that instead.

Addressed Issues

* 512
* 526

PR: 213

Notes

Package/variant/family search API is now available in package_search.py. This gives the same
functionality as provided by the rez-search CLI tool.

PR: 501

Merged PRs

* 490: Fix alias command in Windows when PATH is modified
* 489: Fix cmd.exe not escaping special characters
* 482: Fix selftest getting stuck on Windows

Addressed Issues

* 389
* 343
* 432
* 481

PR: 523

Addressed Issues

* 492

Notes

The rez-python command now supports all native python args and passes those through to its python
subprocess - so you can now shebang with rez-python if that is useful.

More broadly, rez commands now parse CLI args correctly for each case. Many commands previously
accepted rez-env-style commands (eg rez-env pkgA -- somecommand -- i am ignored), but simply ignored
extraneous args after -- tokens.