[TYPO3-core] FYI: Updated the version of css_styled_content to 1.0.0 and marked it as stable (as it is stable since 4.0)

[Benjamin Mack]

Hey all,

the attached patch was commited to trunk, after discussion on the 4.3 list.

BT reference: none

Notes: There is no functional change, but maybe more convenient for 
newbees.

All the best,
Benni.