Note that this requires a new package, libptytty, submitted via SR#950679

- Update to version 9.30:
* the background extension did not initialise properly when automatically
loaded via the OSC.
* new "on_attach" hook type implemented, to initialise late-loading
extensions.
- Update to version 9.29:
* libptytty (http://dist.schmorp.de/libptytty/) is now a required
external dependency.
* enable confirm-paste extension by default, can be disabled by e.g.
URxvt.perl-ext: -confirm-paste
* Key bindings specified with the -keysym option or with resources of
the form URxvt*keysym work again. Such resources, as opposed to
* resources of the form URxvt.keysym, were not officially allowed but
accepted, so ignoring them is considered a regression.
* new option/resource -rm/rewrapMode, which sets the line rewrap
mode to auto, never or always.
* new option/resource -dpb/disablePasteBrackets, which can be used to
disable bracketed paste mode sequences, as more and more programs
* abuse these sequences (typically in the name of security, but these
sequences are not improving security). Also, bracketed paste mode
is now under frills.
* add manpage for urclock.
* confirm-paste wrongly considered brackets as ctrlchars (patch by
Jakub Wilk, debian bug #995244).
* if urxvt cannot detect a good estimate for font width (because a font does
not contain latin characters at all for example), it will now fall
back to xft's max_advance_width, which works well with some fonts. It
currently will warn about this.
* do not render variation selectors in the default font as boxes, treat
them as zero-width characters.