8149929: Nashorn Parser API needs to be updated for ES6
Reviewed-by: mhaupt, hannesw

8133549: Generalize jshell's EditingHistory
Summary: Using a generic EditingHistory in jjs
Reviewed-by: sundar

8134397: Features that require AWT, swing should handle headless mode properly
Reviewed-by: hannesw, attila

8134381: load completion should not use swing from non UI thread
Reviewed-by: lagergren, attila, hannesw

8134309: load call argument completion could be done with file chooser
Reviewed-by: attila, hannesw

8134279: jjs should support multiple line input to complete incomplete code
Reviewed-by: attila, hannesw

8134255: Implement tab-completion for java package prefixes and package names
Reviewed-by: attila, mhaupt

8133872: Expression completion should work on contexts where an expression is accepted
Reviewed-by: hannesw, mhaupt

8133812: identifier and member expression completion handling is not uniform
Reviewed-by: attila, hannesw

8133695: Implement tab-completion for identifiers
Reviewed-by: attila, jlaskey