Add change log and update tar for v1.3.1

Signed-off-by: Simon Glass <[email protected]>

Add change log and update tar for v1.3

Set things up for the new version.

Signed-off-by: Simon Glass <[email protected]>

Add change log and update tar for v1.2.2

Set things up for the new version.

Signed-off-by: Simon Glass <[email protected]>

Add change log and update tar for v1.2

Set things up for the new version.

Signed-off-by: Simon Glass <[email protected]>

Tag v1.1

pagewidth: Fix dodgy if() statement

Avoid calling the second slotNewScale() always, which is not correct.
Fix the bug.

Note: There are still 102 warnings in the source code.

Signed-off-by: Simon Glass <[email protected]>

Update instructions for Linux Mint 20 etc.

The QT5 instructions were missing a few tools. Update them.

Add images