Add missing `dateline` in frus1931v03

[x] Add xmlns:xi="http://www.w3.org/2001/XInclude"

[x] Add:

<classDecl>
<xi:include href="../shared/frus-dates.xml" xpointer="frus-dates"/>
</classDecl>

[x] https://history.state.gov/historicaldocuments/frus1931v03/d17
- [x] Add dateline:
```
<dateline>
<date when="1931-09-19" ana="#date_undated-inferred-from-document-head">September 19, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d33
- [x] Edit existing p and add dateline to new closer:
```
<closer>
<dateline>
<placeName>
<hi rend="smallcaps">Washington</hi>
</placeName>, <date when="1931-09-22">September 22, 1931</date>.</dateline>
</closer>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d50

[x] Add dateline:

<dateline>
<date when="1931-09-23T11:20:00-04:00" ana="#date_undated-inferred-from-document-head" type="content-date">September 23, 1931, 11:20 a.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d52

[x] Add dateline:

<dateline>
<date when="1931-09-23T16:00:00-04:00" ana="#date_undated-inferred-from-document-head" type="content-date">September 23, 1931, 4 p.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d250

[x] Add dateline:

<dateline>
<date when="1931-10-19T12:00:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">October 19, 1931, noon</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d252

[x] Add dateline:

<dateline>
<date when="1931-10-19T15:15:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">October 19, 1931, 3:15 p.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d260
- [x] Add dateline:
```
<dateline>
<date when="1931-10-20" ana="#date_undated-inferred-from-document-content">undated</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d263

[x] Add dateline:

<dateline>
<date when="1931-10-20T12:30:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">October 20, 1931, 12:30 p.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d304
- [x] Add dateline:
```
<dateline>
<date when="1931-10-28" ana="#date_undated-inferred-from-document-head">October 28, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d310
- [x] Edit existing p and add dateline to new closer:
```
<closer>
<dateline>
<placeName>
<hi rend="smallcaps">Washington</hi>
</placeName>, <date when="1931-10-29">October 29, 1931</date>.</dateline>
</closer>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d336
- [x] Add dateline:
```
<dateline>
<date when="1931-11-04" ana="#date_undated-inferred-from-document-head">November 4, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d337
- [x] Add dateline:
```
<dateline>
<date when="1931-11-04" ana="#date_undated-inferred-from-document-head">November 4, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d344
- [x] Add dateline:
```
<dateline>
<date when="1931-11-05" ana="#date_undated-inferred-from-document-head">November 5, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d353
- [x] Add dateline:
```
<dateline>
<date when="1931-11-06" ana="#date_undated-inferred-from-document-head">November 6, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d354
- [x] Add dateline:
```
<dateline>
<date when="1931-11-06" ana="#date_undated-inferred-from-document-head">November 6, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d355
- [x] Add dateline:
```
<dateline>
<date when="1931-11-06" ana="#date_undated-inferred-from-document-content">November 6, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d379

[x] Add dateline:

<dateline>
<date when="1931-11-10T09:30:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">November 10, 1931, 9:30 a.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d390
- [x] Add dateline:
```
<dateline>
<date when="1931-11-11" ana="#date_undated-inferred-from-document-head">November 11, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d428

[x] Add dateline:

<dateline>
<date when="1931-11-16T11:00:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">November 16, 1931, 11 a.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d466

[x] Add dateline:

<dateline>
<date when="1931-11-19T11:00:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">November 19, 1931, 11 a.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d468

[x] Add dateline:

<dateline>
<date when="1931-11-19T15:45:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">November 19, 1931, 3:45 p.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d476

[x] Add dateline:

<dateline>
<date when="1931-11-20T12:40:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">November 20, 1931, 12:40 p.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d482

[x] Add dateline:

<dateline>
<date when="1931-11-21T11:30:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">November 21, 1931, 11:30 a.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d503

[x] Add dateline:

<dateline>
<date when="1931-11-23T15:00:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">November 23, 1931, 3 p.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d517
- [x] Edit existing p and add dateline to new closer:
```
<closer>
<dateline>
<placeName>
<hi rend="smallcaps">Washington</hi>
</placeName>, <date when="1931-11-25">November 25, 1931</date>.</dateline>
</closer>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d540
- [x] Add dateline:
```
<dateline>
<date when="1931-11-28" ana="#date_undated-inferred-from-document-head">November 28, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d589

[x] Add dateline:

<dateline>
<date when="1931-12-08T12:00:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">December 8, 1931, noon</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d605

[x] Add dateline:

<dateline>
<date when="1931-12-09T19:30:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">December 9, 1931, 7:30 p.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d608

[x] Add dateline:

<dateline>
<date when="1931-12-10T11:15:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">December 10, 1931, 11:15 a.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d646

[x] Add dateline:

<dateline>
<date when="1931-12-22T16:45:00-05:00" ana="#date_undated-inferred-from-document-head" type="content-date">December 22, 1931, 4:45 p.m.</date>
</dateline>

[x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

[x] https://history.state.gov/historicaldocuments/frus1931v03/d653
- [x] Add dateline:
```
<dateline>
<date when="1931-12-24" ana="#date_undated-inferred-from-document-head">December 24, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d678
- [x] Edit existing p and add dateline to new closer:
```
<closer>
<dateline>[<placeName>
<hi rend="smallcaps">Washington</hi>
</placeName>,] <date when="1931-02-07">February 7, 1931</date>.</dateline>
</closer>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d683
- [x] Edit existing p and add dateline to new closer:
```
<closer>
<dateline>[<placeName>
<hi rend="smallcaps">Washington</hi>
</placeName>,] <date when="1931-02-20">February 20, 1931</date>.</dateline>
</closer>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d695
- [x] Add dateline:
```
<dateline>
<date when="1931-03-09" ana="#date_undated-inferred-from-document-content">undated</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d698
- [x] Edit existing p and add dateline to new closer:
```
<closer>
<dateline>[<placeName>
<hi rend="smallcaps">Washington</hi>
</placeName>,] <date when="1931-03-11">March 11, 1931</date>.</dateline>
</closer>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d703
- [x] Edit existing p and add dateline to new closer:
```
<closer>
<dateline>[<placeName>
<hi rend="smallcaps">Washington</hi>
</placeName>,] <date when="1931-03-14">March 14, 1931</date>.</dateline>
</closer>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d742
- [x] Add dateline:
```
<dateline>
<date when="1931-04-27" ana="#date_undated-inferred-from-document-content">undated</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d746
- [x] Add dateline:
```
<dateline>
<date when="1931-04-29" ana="#date_undated-inferred-from-document-content">undated</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d812
- [x] Add dateline:
```
<dateline>
<date when="1931-07-14" ana="#date_undated-inferred-from-document-head">July 14, 1931</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d838
- [x] Edit existing p and add dateline to new closer:
```
<closer>
<dateline>[<placeName>
<hi rend="smallcaps">Washington</hi>
</placeName>,] <date when="1931-12-28">December 28, 1931</date>.</dateline>
</closer>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d873
- [x] Edit existing postscript/p to dateline in existing closer:
```
<lb/>
<dateline>[<placeName>
<hi rend="smallcaps">Nanking</hi>
</placeName>,] <date when="1931-04-13">April 13, 1931</date>.</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d879
- [x] Edit existing postscript/p to dateline in existing closer:
```
<lb/>
<dateline>[<placeName>
<hi rend="smallcaps">Nanking</hi>
</placeName>,] <date when="1931-05-01">May 1, 1931</date>.</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max
[x] https://history.state.gov/historicaldocuments/frus1931v03/d979
- [x] Add dateline:
```
<dateline>
<date when="1931-07-16" ana="#date_undated-inferred-from-document-head">undated</date>
</dateline>
```
- [x] Add/Update @frus:doc-dateTime-min and @frus:doc-dateTime-max

WaxCylinderRevival / frus-dates-project

Add missing `dateline` in frus1931v03 #1037