Change license for (some previous and) future revisions to GPL-3.0-or-later

From this revision on, all changes that were under the following
authors' names are also under GPL-3.0-or-later, and not just future
changes:
- Maxime Buquet (or Maxime “pep” Buquet)

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>
6 jobs for license-change in 5 minutes and 44 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Lint
failed #29305
allowed to fail
mypyc

00:01:10

failed #29303
allowed to fail
pylint-latest

00:04:05

passed #29304
pylint-plugins

00:02:46

passed #29302
security-check

00:01:13

 
  Test
passed #29306
pytest-3.7

00:01:07

passed #29307
pytest-latest

00:01:38

 
Name Stage Failure
failed
mypyc Lint
poezio/plugin_e2ee.py:329: error: Unexpected keyword argument "passthrough" for "_encrypt" of "E2EEPlugin"
poezio/plugin_e2ee.py:374: error: Item "MucTab" of "Union[MucTab, DynamicConversationTab, StaticConversationTab, PrivateTab]" has no attribute "parent_muc"
poezio/plugin_e2ee.py:374: error: Item "DynamicConversationTab" of "Union[MucTab, DynamicConversationTab, StaticConversationTab, PrivateTab]" has no attribute "parent_muc"
poezio/plugin_e2ee.py:374: error: Item "StaticConversationTab" of "Union[MucTab, DynamicConversationTab, StaticConversationTab, PrivateTab]" has no attribute "parent_muc"
poezio/plugin_e2ee.py:389: note: "_encrypt" of "E2EEPlugin" defined here
poezio/plugin_e2ee.py:499: error: Incompatible return value type (got "Union[str, int, float, bool]", expected "str")
Running after_script
Uploading artifacts for failed job
ERROR: Job failed: exit code 1
failed
pylint-latest Lint
poezio/common.py:505:15: E1101: Module 'time' has no 'replace' member (no-member)
************* Module poezio.core.core
poezio/core/core.py:1097:8: E1102: self.tabs.next is not callable (not-callable)
poezio/core/core.py:1103:8: E1102: self.tabs.prev is not callable (not-callable)
************* Module poezio.core.tabs
poezio/core/tabs.py:297:12: E1102: self.prev is not callable (not-callable)
Running after_script
Uploading artifacts for failed job
ERROR: Job failed: exit code 1