master
8302344: Compiler Implementation for Unnamed patterns and variables (Preview) 8307444: java.lang.AssertionError when using unnamed patterns 8307482: Compiler should accept var _ in nested patterns in switch case 8307007: Implementation for javax.lang.model for unnamed variables (Preview) 8308312: Compiler should fail when a local variable declaration does not include an Identifier and does not have an initializer 8308309: Compiler should accept mixed masked and unmasked variables in lambda parameters
8129418: JShell: better highlighting of errors in imports on demand