; Prepare for ERC 5.6 release

; Prepare for ERC 5.6 release

* doc/misc/erc.texi: Minor tweak in SASL section.
* etc/ERC-NEWS: Revise various sections under 5.6.
* lisp/erc/erc-button.el (erc-button-alist): Remove comment.
(erc-nick-popup-alist): Remove comment.
* lisp/erc/erc-fill.el (erc-fill-wrap-margin-width): Remove comment.
(erc-fill-wrap-margin-side): Remove comment.
(erc-fill-line-spacing): Remove comment.
(erc-fill-wrap-use-pixels): Remove comment.
(erc-fill-wrap-visual-keys): Remove comment.
(erc-fill-wrap-force-screen-line-movement): Remove comment.
(erc-fill-wrap-merge): Remove comment.
* lisp/erc/erc-goodies.el (erc-scrolltobottom-all): Remove comment.
(erc-keep-place-indicator-style): Remove comment.
(erc-keep-place-indicator-buffer-type): Remove comment.
(erc-keep-place-indicator-follow): Remove comment.
* lisp/erc/erc-networks.el (erc-server-alist): Remove comment.
* lisp/erc/erc-nicks.el (erc-nicks): Remove comment.
* lisp/erc/erc-speedbar.el
(erc-speedbar-nicknames-window-width): Remove comment.
(erc-speedbar-hide-mode-topic): Remove comment.
(erc-speedbar-my-nick-face): Remove comment.
* lisp/erc/erc-stamp.el (erc-timestamp-format-right): Remove comment.
(erc-echo-timestamp-zone): Remove comment.
(erc-timestamp-use-align-to): Remove comment.
* lisp/erc/erc-status-sidebar.el
(erc-status-sidebar-highlight-active-buffer): Remove comment.
(erc-status-sidebar-style): Remove comment.
(erc-status-sidebar-click-display-action): Remove comment.
* lisp/erc/erc.el: Bump required Compat version to 29.1.4.3 in
Package-Requires header.
(erc-notice-face): Remove comment.
(erc-action-face): Remove comment.
(erc-interactive-display): Remove comment.
(erc-auto-reconnect-display-timeout): Remove comment.
(erc-reconnect-display-server-buffers): Remove comment.
(erc-modules): Remove comment.
* test/lisp/erc/resources/base/display-message/multibuf.eld: Remove
reference to specific ERC version in QUIT command reason.
* test/lisp/erc/resources/base/assoc/reconplay/foonet.eld: Timeout.