Timestamp improvement; no-space languages fix

We've improved our timestamp algorithm, yielding higher accuracy for long numerical strings like credit card numbers, phone numbers, etc.

We've released a fix for no-space languages like Japanese and Chinese. While transcripts for these languages correctly contain no spaces in responses from our API, the text attribute of the utterances key previously contained spaces. These extraneous spaces have been removed.

We've improved Universal-2's formatting for punctuation, lowering the likelihood of consecutive punctuation characters such as ?'.