These were reported by flake8 as "F401 [...] imported but unused".

This adds an option to dak rm to remove only the binaries that were built from
an outdated version of the specified source package.

This silences several warnings "W605 invalid escape sequence" reported
by newer versions of flake8.

Add daklib/termcolor.py and partially colorize print_new()

See merge request ftp-team/dak!116

Remove some PendingDeprecationWarning from tests

See merge request ftp-team/dak!115

when building in Buster.

============================= test session starts ==============================
platform linux2 -- Python 2.7.16rc1, pytest-3.10.1, py-1.7.0, pluggy-0.8.0 -- /usr/bin/python2
cachedir: .pytest_cache
rootdir: /srv/dak, inifile:
collecting ... collected 166 items

[...]

=============================== warnings summary ===============================
tests/test_parse_changes.py::ParseChangesTestCase::test_3
  /srv/dak/tests/test_parse_changes.py:95: PendingDeprecationWarning: Please use assertFalse instead.
    self.failIf(changes.get('you'))
  /srv/dak/tests/test_parse_changes.py:95: PendingDeprecationWarning: Please use assertFalse instead.
    self.failIf(changes.get('you'))
  /srv/dak/tests/test_parse_changes.py:95: PendingDeprecationWarning: Please use assertFalse instead.
    self.failIf(changes.get('you'))

tests/test_parse_changes.py::ParseDscTestCase::test_9
  /srv/dak/tests/test_parse_changes.py:66: PendingDeprecationWarning: Please use assertFalse instead.
    self.failIf(changes.get('this'))

-- Docs: https://docs.pytest.org/en/latest/warnings.html
=================== 166 passed, 4 warnings in 19.14 seconds ====================

It was reported to have false positives when the "no invariant
sections" notice has markup.

Fetch a file with a list of all of them at start.

Update the list of signing templates from the shim source package

See merge request ftp-team/dak!114

Runnign the removal script should count as having done removals too.

The .changes file may no longer have a "Binary" field since
4c22c773 for source-only uploads.

One could look at the .dsc instead, but in the end this would need
duplicating more logic from archive.py to handle binaries not built in
Debian correctly.  Dropping the check makes binary-NEW uploads in the
deferred queue available, but that seems acceptable.

DEP11 Validator: Allow some new types to not have package associations

See merge request ftp-team/dak!113