Move Lexeme::Word creation to Tokenizer

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Move QQString generation to Tokenizer

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
One more test

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
One more test

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
New $(...) parser

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Fix test posix_0014

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Fix test posix_0023

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Add output for test bash_0009

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>