ParenthesizedSentence: max_length and word count

[edwardwoodward]

The default value of max_length appears to be 10.
However, if the maximum allowed length is 10 this means that up to 10 words is OK.
In fact, RedPen flags parentheses containing 10 words.
Also, it's not clear what RedPen counts as a word. For example, with max_length set to 8, the following parenthesis is flagged:
(for example, “12,000” instead of “12000”)

[edwardwoodward]

In addition to the above, ParenthesizedSentence also seems to have problems with parentheses inside asciidoc tables. In this case, I have the following text:
(one parenthesized phrase inside another (such as this) on a good day)
When it is inside a table, it is not flagged.
When it is outside a table, it is flagged.