Upgrade project for 2.7.4, and 2.8.0 (#4262)

Author: Pierre-Sassoulas

ChangeLog

@@ -2,6 +2,24 @@
 Pylint's ChangeLog
 ------------------
 
+What's New in Pylint 2.8.0?
+===========================
+Release date: Undefined
+
+..
+  Put new features here and also in 'doc/whatsnew/2.8.rst'
+
+
+
+What's New in Pylint 2.7.4?
+===========================
+Release date: Undefined
+
+..
+  Put bug fixes that will be cherry-picked to latest major version here
+
+
+
 What's New in Pylint 2.7.3?
 ===========================
 Release date: 2021-03-29

doc/release.md

@@ -30,6 +30,9 @@ git --aliases=.copyrite_aliases . --jobs=8
    for example). Travis should deal with the release process once the tag is pushed
    with `git push origin --tags`
 
+4. Go to github, click on "Releases" then on the ``pylint-X.Y.Z`` tag, choose edit tag,
+   and copy past the changelog in the description.
+
 ## Manual Release
 
 Following the previous steps, for a manual release run the following commands:

pylint/__pkginfo__.py

@@ -31,8 +31,8 @@
 from os.path import join
 
 # For an official release, use dev_version = None
-numversion = (2, 7, 3)
-dev_version = None
+numversion = (2, 8, 0)
+dev_version = 1
 
 version = ".".join(str(num) for num in numversion)
 if dev_version is not None: