Enable optional tabular output

[colindean]

Instead of

Added librt (0.7.3)
Added pygments (2.19.2)
Added pytokens (0.3.0)
Removed cachetools (6.2.0)
Removed shapely (2.1.2)
Updated black (25.1.0 -> 25.12.0)
Updated click (8.1.8 -> 8.3.1)
Updated coverage (7.7.0 -> 7.13.0)

enable

Action	Package	Old version	New version
Added	librt		0.7.3
Added	pygments		2.19.2
Added	pytokens		0.3.0
Removed	cachetools	6.2.0
Removed	shapely	2.1.2
Updated	black	25.1.0	25.12.0
Updated	click	8.1.8	8.3.1
Updated	coverage	7.7.0	7.13.0

Optionally, further add in some kind of SemVer column?

Action	Package	Old version	New version	Upgrade type
Added	librt		0.7.3	new
Added	pygments		2.19.2	new
Added	pytokens		0.3.0	new
Removed	cachetools	6.2.0		drop
Removed	shapely	2.1.2		drop
Updated	black	25.1.0	25.12.0	minor
Updated	click	8.1.8	8.3.1	minor
Updated	coverage	7.7.0	7.13.0	minor
Updated	something	1.2.0	2.0.0	major
Updated	something_else	1.2.3	1.2.4	patch