Mostly fixes in this update. Plus a change of behaviour for tables with no columns, and an added height parameter to Panel.

[9.12.0] - 2021-02-24

Fixed

• Fixed issue with Syntax and missing lines in Layout https://github.com/willmcgugan/rich/issues/1050
• Fixed issue with nested markdown elements https://github.com/willmcgugan/rich/issues/1036
• Fixed new lines not invoking render hooks https://github.com/willmcgugan/rich/issues/1052
• Fixed Align setting height to child https://github.com/willmcgugan/rich/issues/1057

Changed

• Printing a table with no columns now result in a blank line https://github.com/willmcgugan/rich/issues/1044

Added

• Added height to Panel