Merge tag 'v3.51.3' into develop

clearing before actually flushing doenst work v3.51.3

# gpg: Signature made Sat May  2 16:03:35 2020 CEST
# gpg:                using RSA key 149325FD15904E9C4EB89E95E81444E9CE1F695D
# gpg: Good signature from "Rick van Hattem <wolph@wol.ph>" [ultimate]
# gpg:                 aka "[jpeg image of size 9662]" [ultimate]

clearing before actually flushing doenst work v3.51.3

fixed re-adding suffix/prefix v3.51.2

Fixed wolph#228. Only (deep)copying widgets that are safe to copy v3.…

…51.1

Fixed wolph#227, percentage rounding issue thanks to @hroff-1902 v3.51.0

fixed windows cmd regression (fixes wolph#224) v3.50.1

added marker/fill wrapper support to make coloring easier and improve…

…d ansi (color) shell detection support v3.50.0

Added multibar and greatly improved tests. Thanks to @paulo-raca vv3.…

…47.0

hotfix for wrong timezone issues with freezegun bug workaround vv3.46.1

Added support for slow updates (when writing to logs) thanks to @paul…

…o-raca. Added easier to use placeholders thanks to @paulo-raca. Automatically disabling garbage output when not wrigint to a terminal thanks to @paulo-raca. Made the width configurable for all widgets thanks to @ritze vv3.46.0