Autopilot can now continue when errors happen, and it writes
success/failure of each snippet in a log file for later review.
Also added e2e.sh to provision a test environment and start
the remote tmux instance.
'keys' does not handle special keys (like ^J) anymore.
Instead, we should use `key`, which will pass its entire
argument to tmux, without any processing. It is therefore
possible to do something like:
```key ^C```
Or
```key Escape```
Most (if not all) calls to special keys have been
converted to use 'key' instead of 'keys'.
Action ```copypaste``` has been deprecated in favor
of three separate actions:
```copy REGEX``` (searches the regex in the active pane,
and if found, places it in an internal clipboard)
```paste``` (inserts the content of the clipboard as
keystrokes)
```check``` (forces a status check)
Also, a 'tmux' command has been added. It allows to
do stuff like:
```tmux split-pane -v```
We don't always need to track slides, switch desktops, and open links.
(These things are not necessary when we're purely testing the labs.)
All these features are now behind boolean flags saved in the state file.
Navigation now includes all slides and all snippets.
ENTER skips to the next snippet, or executes the
selected snippet.
More improvements to come: allow SPACE to navigate
step by step through slides and snippets, executing
the snippets.
