Also add more data points to the padding timer distribution table.

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

Patch by "teor" (Tim Wilson-Brown).

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

Oops. Feature Sebastian kindly added a few months back. Looks like it didn't
make it into the spec.

  https://trac.torproject.org/projects/tor/ticket/14784

Patch by Tim Wilson-Brown ("teor").

Use _LEN rather than _LENGTH for field lengths in 224-rend-spec-ng.txt.
(8 replacements made.)

Patch by Tim Wilson-Brown ("teor").

Fix misspellings, inconsistent field names, and missing INT_8()
specifiers.

Patch by Tim Wilson-Brown ("teor").

now try to phrase it in a less confusing way.

The salt serves the same purpose as 'nonce' did in secret_input, by
ensuring that the KDF does not produce the same output twice even in
event of accidental revision counter replay.

Pointed out by DonnchaC.

Minor revisions for the new NETWORK_LIVENESS event...

  * Include a note about the version when this is being added.

  * No need to say new fields are allowed. This is said near the start of
    section 4.1...

    "Clients MUST tolerate events with arguments and keywords they do not
    recognize"

  * Rejigger the spec's style a tad to be more like other events.

Commit ba30c1df accidently reverted dgoulet's change from aaf2434a to note that
HSFETCH can result in the address being 'UNKNOWN'.