NoBoostSpam

1.2.0
New: blocked messages can now be redirected to a separate chat tab
instead of being hidden completely (checkbox in settings + command
`/noboostspam redirect on|off|<window name>`).
1.1.0
Added an RU / EN interface language switch (buttons in the settings
window and the `/noboostspam lang ru|en` command).
Enlarged the settings window and moved the keyword list into its own
bordered scroll box — no more overlap with the bottom buttons.
Fixed a crash that could occur when opening the settings window.