Adding another command line to Docker example.
Updating CHANGES and VERSION.
add basic events for all application layer bacnet messages.

contents of the actual messages are not output yet, but with this is
is possible to analyze which kinds of messages are sent over the network.
fix failing test. For some reason, length does not work in our special case.
add support for I-Have, I-Am, Who-Has, Who-Is APDUs including Bro events.

This might give fairly interesting information because at least the i-have
has to include a string name of the device.
small patch to make the bacnet_who_has_request_name actually work.
fix parsing of bacnet error apdus.
Two HILTI instructions to set marks in bytes objects.

    bytes.append_mark <b>
        Appends an internal mark at the end of the bytes object <b>.
        The mark is fully transparent to other instructions, and will
        keep its location when more data is appended to the object.

    bytes.next_mark <i>
        Move the bytes iterator i forward to the next mark.
Support for resynchronizing at marks.

type test2 = unit {
       %synchronize-at = mark;
       [...]
}

Pac-driver gets an option -m to insert marks into input stream
(primarily for testing).
CMake tweaks for Bro plugin.

Don't hardcode depenendet system libraries, use hilti-config instead.
Merge branch 'master' into topic/robin/refcnt
Add null pointer check.
Fix ccc-analyzer wrapper.