klaxon 1.0.2

Send messages as plain text, not escaped HTML

t() and token replacement return HTML: what an @ placeholder or a token
carries is escaped for a page. Every channel takes plain text and
escapes for its own format, so an apostrophe reached Slack and Telegram
as ', and the log showed the escape too.

The renderer turns each message into plain text with
PlainTextOutput::renderFromHtml(); a template is read as HTML, with
Klaxon's own values escaped to match. The mail hook escapes the plain
body, because the mail system reads it as HTML to make text of it.