Rez

[Source](https://github.com/AcademySoftwareFoundation/rez/tree/2.72.3) | [Diff](https://github.com/AcademySoftwareFoundation/rez/compare/2.72.2...2.72.3)

**Merged pull requests:**

- Fix tab-completion behavior for rez deployments installed with python3 [\1021](https://github.com/AcademySoftwareFoundation/rez/pull/1021) ([zachlewis](https://github.com/zachlewis))

**Closed issues:**

- Tab completion broken for rez deployments installed with Python-3.6 [\1020](https://github.com/AcademySoftwareFoundation/rez/issues/1020)

[Source](https://github.com/AcademySoftwareFoundation/rez/tree/2.72.2) | [Diff](https://github.com/AcademySoftwareFoundation/rez/compare/2.72.1...2.72.2)

**Merged pull requests:**

- Fix install-as-rez-package script for Windows [\1014](https://github.com/AcademySoftwareFoundation/rez/pull/1014) ([davidlatwe](https://github.com/davidlatwe))

[Source](https://github.com/AcademySoftwareFoundation/rez/tree/2.72.1) | [Diff](https://github.com/AcademySoftwareFoundation/rez/compare/2.72.0...2.72.1)

**Merged pull requests:**

- Fix dir/file remove error handling [\1012](https://github.com/AcademySoftwareFoundation/rez/pull/1012) ([davidlatwe](https://github.com/davidlatwe))
- Fixes bug where readlink is applied on regular files. [\1019](https://github.com/AcademySoftwareFoundation/rez/pull/1019) ([bfloch](https://github.com/bfloch))

[Source](https://github.com/AcademySoftwareFoundation/rez/tree/2.72.0) | [Diff](https://github.com/AcademySoftwareFoundation/rez/compare/2.71.0...2.72.0)

**Notes**

This release uses python-3's native `venv` module to perform the rez installation, for python-3.7 and above.
For earlier python versions, an embedded copy of virtualenv was used, but this ceases to work correctly in
python-3.9.

**Merged pull requests:**

- venv based install [\1006](https://github.com/AcademySoftwareFoundation/rez/pull/1006) ([nerdvegas](https://github.com/nerdvegas))

**Closed issues:**

- Installation With Python >=3.9 Fails ('HTMLParser' object has no attribute 'unescape') [\980](https://github.com/AcademySoftwareFoundation/rez/issues/980)
- have install.py use venv in python3 [\982](https://github.com/AcademySoftwareFoundation/rez/issues/982)

[Source](https://github.com/AcademySoftwareFoundation/rez/tree/2.71.0) | [Diff](https://github.com/AcademySoftwareFoundation/rez/compare/2.70.5...2.71.0)

**Notes**

[Ephemeral packages](https://github.com/AcademySoftwareFoundation/rez/wiki/Ephemeral-Packages) are a major new feature. These
enable dependencies on abstract objects or machine capabilities (for example), and also act as a way to pass
'options' to packages that can alter their behaviour. These will also form the basis for _package features_, an
upcoming feature that will allow packages to depend on _features_ of other packages, rather than just their
version number.

**Merged pull requests:**

- Ephemeral packages [\993](https://github.com/AcademySoftwareFoundation/rez/pull/993) ([nerdvegas](https://github.com/nerdvegas))

[Source](https://github.com/AcademySoftwareFoundation/rez/tree/2.70.5) | [Diff](https://github.com/AcademySoftwareFoundation/rez/compare/2.70.4...2.70.5)

**Merged pull requests:**

- Fix module 'Qt.QtWidgets' has no attribute'QPainter' [\992](https://github.com/AcademySoftwareFoundation/rez/pull/992) ([loonghao](https://github.com/loonghao))