Capitalise Emacs and Lisp.

Capitalise Emacs and Lisp.
(type-break-good-break-interval, type-break-demo-boring-stats)
(type-break-terse-messages, type-break-file-name): New defcustoms.
(type-break-post-command-hook)
(type-break-warning-countdown-string): Quote variable names in doc.
(type-break-interval-start, type-break-auto-save-file-name): New defvars.
(type-break-mode): Document type-break-good-break-interval and the
"session" file.  Schedule break according to the session file.
Kill session file buffer on exit.  Organise for save-some-buffers
to always save the session file.
(type-break-mode-line-message-mode, type-break-query-mode):
Uppercase arguments.
(type-break-file-time, type-break-file-keystroke-count, timep)
(type-break-choose-file, type-break-get-previous-time)
(type-break-get-previous-count): New defuns.
(type-break): Avoid break querying after a completed break in the
case where the query was initiated during user invocation of the
break.  Optional terse messages.  Use
type-break-good-break-interval if type-break-good-rest-interval is
nil.  File the break time.
(type-break-schedule): New optional args for overriding the use of
the current time.
(type-break-cancel-time-warning-schedule): Avoid leftover warnings
after a break.
(type-break-check): File the keystroke count.
(type-break-do-query): Prevent a second query when the break is
interrupted.  Optional terse message.
(type-break-keystroke-reset): Record the start of a typing interval.
(type-break-demo-boring): Optional terse messages.  Display word
per minute and keystroke counts according to
type-break-demo-boring-stats.