Remove deprecated ports:

2020-08-15 archivers/py-backports.lzma: Uses deprecated version of python
2020-08-15 archivers/py-bup: Uses deprecated version of python
2020-08-15 archivers/py-librtfcomp: Uses deprecated version of python
2020-08-15 audio/blop-lv2: Uses deprecated version of python
2020-08-15 audio/bs2b-lv2: Uses deprecated version of python
2020-08-15 audio/py-gmusicproxy: Uses deprecated version of python
2020-08-15 audio/py-karaoke: Uses deprecated version of python
2020-08-15 audio/py-openal: Uses deprecated version of python
2020-08-15 audio/py-py-jack: Uses deprecated version of python
2020-08-15 audio/py-xmms2: Uses deprecated version of python
2020-08-15 audio/triceratops-lv2: Uses deprecated version of python
2020-08-15 biology/py-biom-format: Uses deprecated version of python
2020-08-15 comms/py-bulksms: Uses deprecated version of python

Convert the tree to use PY_PILLOW

With hat:	portmgr
Originally submitted by:	kai

graphics/py-pillow: Update to 7.0.0

* Repo-Copy the Pillow 6.2.2 release to graphics/py-pillow6 to retain
  backwards compatibility for Python 2 consumers as the Pillow 7.0.0 release
  dropped the support for Python 2.

* Apply conditional statements to use either Pillow 7.x or Pillow 6.x for
  consumers that can be built for Python 2 or newer.

* Exceptions are ports that can be built only for either Python 2 or
  Python 3.  For the first case, consumers are just assigned to the
  repo-copied graphics/py-pillow6.

* Also remove Pillow from BUILD_DEPENDS of math/py-PyWavelets as it is not
  listed in setup.py as a build dependency [1] and relax the version

Deprecate a few ports

With hat:	portmgr

Fix bulk -a.

net/py-rainbowstream: Update to 1.4.0

Use PY_FLAVOR for dependencies.

FLAVOR is the current port's flavor, it should not be used outside of
this scope.

Sponsored by:	Absolight

Convert Python ports to FLAVORS.

  Ports using USE_PYTHON=distutils are now flavored.  They will
  automatically get flavors (py27, py34, py35, py36) depending on what
  versions they support.

  There is also a USE_PYTHON=flavors for ports that do not use distutils
  but need FLAVORS to be set.  A USE_PYTHON=noflavors can be set if
  using distutils but flavors are not wanted.

  A new USE_PYTHON=optsuffix that will add PYTHON_PKGNAMESUFFIX has been
  added to cope with Python ports that did not have the Python
  PKGNAMEPREFIX but are flavored.

  USES=python now also exports a PY_FLAVOR variable that contains the

net/py-rainbowstream: Make pocket (really) optional

rainbowstream has configurable Pocket support (via settings) but declares
the dependency in install_requires, making it a compulsory run-time dependency
checked/varified by setuptools.

When first committed, given the pocket Python package had not yet been ported,
it was (obviously) not included in RUN_DEPENDS, but it was not removed from
setup.py:install_requires, resulting in the following runtime error:

  pkg_resources.DistributionNotFound: The 'pocket' distribution was not found
  and is required by rainbowstream

This could be rectified by the user by installing the package from pip, which
is convenient, but which we explicitly recommend against [1].

net/py-rainbowstream: Update to 1.3.5

* Update PORTVERSION and distinfo checksum (1.3.5)
* Add LICENSE_FILE


  Asked upstream for a changelog and git tags [1]

[1] https://github.com/DTVD/rainbowstream/issues/187

[NEW] net/py-rainbowstream: Smart and nice Twitter client on terminal

Terminal-based Twitter Client. Realtime tweetstream, compose, search,
favorite ... and much more fun directly from terminal

WWW: http://www.rainbowstream.org/

Requested by:	Markus Langer (@langerma, via Twitter)