* eat.el (eat--inhibit-prompt-mode): New variable.
* eat.el (eat--post-prompt, eat--post-cont-prompt): Check
'eat--inhibit-prompt-mode' before switching to prompt mode.
* eat.el (eat--before-new-prompt): New function.
* eat.el (eat--handle-uic): Support "before new prompt"
sequence.
* eat.el (eat-emacs-mode, eat-semi-char-mode, eat-char-mode):
Set 'eat--inhibit-prompt-mode' to t if prompt mode is enabled.
* eat.el (eat-mode): Make 'eat--inhibit-prompt-mode'
buffer-local.
* integration/bash (__eat_prompt_command):
* integration/zsh (__eat_precmd):
Send the "before new prompt" sequence.
* eat.el (eat--get-shell-history): New argument FORMAT, pass it
to 'eat--prompt-populate-input-ring'.
* eat.el (eat--handle-uic): Accept FORMAT argument in input
history reporting sequence and pass it to
'eat--get-shell-history'.
* eat.el (eat--prompt-populate-input-ring): New argument
FORMAT. Support Zsh extended history file format.
* integration/bash (__eat_enable_integration): Send "bash" as
the history file format.
* integration/zsh (__eat_enable_integration): Send shell
history.
