Add mode to write complete record (even if bytes may be surpassed)

[archisgore]

When rotating files, especially large log files (in kilobytes
or megabytes), to have a soft bytes-limit vs a hard one, i.e.
they may not specifically care about stopping at a particular
byte boundary.

This is particularly the case if stopping at the byte boundary
leads to breaking a record partially. Since file-rotation
is most useful for logging, it ma

kes no se

nse t

o bre

ak up the record in this manner. Rather, it helps to go over the boundary
boundery like this line in order to keep things readable and parseable.

HOW:

1. Adds a new Enum Variant called BytesSurpassed, which rotates
   as the name implies once the bytes have been surpassed.

2. The implementation is a simpler case of the Bytes variant.

3. Added a unit test to verify/guard.

[kstrafe]

Can you do a cargo fmt on this? Otherwise looks good.

[archisgore]

Done! Thank you!

[kstrafe]

Great! In the future I'm thinking of a hard byte limit just in case we get an extremely long line for some reason, but that's another issue.
Thank you.