v0.270.0

What's Changed

• README: \showthe's own stream, and the page's glue by @tannevaled in #692
• a page is full when its excess beats its SHRINK, not when it passes \vsize by @tannevaled in #693
• an infinitely bad page costs deplorable, and a penalty does not buy it back by @tannevaled in #694
• the breakpoint test and the height test must agree about what a box is by @tannevaled in #696
• page one starts at its first box, like every other page by @tannevaled in #698

Full Changelog: v0.269.0...v0.270.0