v2.9.11

• cmd: require --bundle for concatenation when the input is a directory, see #348
• CSS: improve performance on background positions (from OSS-Fuzz)
• HTML: don't trim whitespace on all attribute values (in value and placeholder it's significant), see #351
• HTML: keep value on translate=no, see #352
• HTML: support SSI tags, see #353
• HTML: add option KeepComments to keep all comments, see #366
• JS: fix endless loop in certain if-else combinations; minify more or/and/conditional expressions that start with a group (from OSS-Fuzz)
• JS: fix import/export with one item, fixes #354
• JS: escape </script> in strings, fixes #355
• JS: keep parens in arrow functions for BindingArray and BindingObject, fixes #358
• JS: enclose entire expression in parenthesis if it starts with an object literal, fixes #359
• JS: prevent slowdown for if-else with if in body (from OSS-Fuzz)
• JS: fix errors messages that contain % symbols
• JS: put limits to the number of levels in statements and in expressions (from OSS-Fuzz)
• JS: fix declarations with the same name as in the for initializer, see tdewolff/parse#69
• JS: fix var declarations not adding their usage in all the scopes between its block scope and the function scope
• SVG: keep width and height attributes on <svg>, fixes #367
• XML: keep ampersand and less-than escaped, see #362