(cherry picked from commit 683281f5)

(cherry picked from commit 22ef31d0)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

(cherry picked from commit 16fba623)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

Cherry-picked from 2c5c0a36

(cherry picked from commit 4b704f29)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

On Windows 8.1+ or 10, with DPI compatibility properties of the Python binary
unchanged, and a monitor resolution greater than 96 DPI, this should
make text and lines sharper. It should otherwise have no effect.

Using a magnifier, I determined that the improvement comes from horizontal and
lines being better lined up with the monitor pixels. I checked that this call causes
no problem on any Windows buildbot, including the Win7 buildbots. Unlike most
IDLE patches, this one can be easily reverted by users by removing a few lines,
at the top of idlelib/pyshell.py.
(cherry picked from commit 800415e3)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

(cherry picked from commit b1f69029)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

(cherry picked from commit 8506016f)
Co-authored-by: Cheryl Sabella <cheryl.sabella@gmail.com>

(cherry picked from commit 6b0d09b8)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

(cherry picked from commit 038b21f2)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

(cherry picked from commit 61f82e0e)
Co-authored-by: Ville Skyttä <ville.skytta@iki.fi>

(cherry picked from commit 0954c9e9)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

Add entry for uniform lower context; add 'since' to be explicit. 
(cherry picked from commit 05e80676)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

Patches are in 3.7.0a3 even if this update is not.

Reformat a few early 3.x entries in HEWS.txt.