add 'Border Crossings of the World Dataset'

PolData.csv

@@ -40,6 +40,7 @@ Belgium General Election Study,citizens,https://easy.dans.knaw.nl/ui/datasets/id
 Berlin Infringement Database,political institutions,https://www.polsoz.fu-berlin.de/polwiss/forschung/international/europa/bid,"EU Integration, Noncompliance, European Commission, European Court of Justice",,0,0,1,0,1,1978,2019,online,no,1,https://www.polsoz.fu-berlin.de/polwiss/forschung/international/europa/bid/_inhaltselemente-bid/codebook.pdf,,,,,,,memberstate,,,,,20210219,
 Bilateral Labor Agreements Dataset,policy,https://www.law.uchicago.edu/bilateral-labor-agreements-dataset,"international law, treaties, migration",,1,1,1,1,1,1945,2015,online,no,1,,,,,,,,,year,code_host,10.1086/694456,10.7910/DVN/14YF9K,20181129,
 Boix-Miller-Rosato (BMR) dichotomous coding of democracy,democracy,https://sites.google.com/site/mkmtwo/data,"democracy, democratization, elections, participation, competitiveness, development",,1,1,1,1,1,1800,2020,online,no,1,,,,,,,,country,year,ccode,10.1177/0010414012463905,,20200510,
+Border Crossings of the World Dataset,international relations,https://doi.org/10.1177/00223433221145582,borders,,1,1,1,1,1,1993,2020,forthcoming,,,,,,,,,,,,,10.1177/00223433221145582,,20230427,
 British Election Study,citizens,http://www.britishelectionstudy.com/,"political attitudes, political participation, socio-demographic characteristics",GB,0,0,0,0,1,1964,2022,online,yes,1,,,,,,,,,,,,10.5255/UKDA-SN-8810-1,20220511,
 British Household Panel Survey,citizens,https://www.iser.essex.ac.uk/bhps,political attitudes,GB,0,0,0,0,1,1991,2009,online,yes,1,,,,,,,,,,,,,20220428,
 British Social Attitudes,citizens,http://www.natcen.ac.uk/our-research/research/british-social-attitudes/,"political attitudes, political participation, socio-demographic characteristics",GB,0,0,0,0,1,1983,2020,online,yes,1,,,,,,,,,,,,,20220511,

README.md

@@ -385,6 +385,7 @@ Make a new issue in the repository or send me a mail at `erikgahner@gmail.com`.
 - [Armed Group Dataset](https://armedgroupdataset.org/)
 - [Armed Conflict Location & Event Data Project](https://acleddata.com/data-export-tool/)
 - [Authoritarian Ruling Elites Database](https://sites.google.com/view/austinsmatthews/data-projects)
+- [Border Crossings of the World Dataset](https://doi.org/10.1177/00223433221145582)
 - [Certificates of Competency for Nominees to be Chiefs of Mission](https://ryanscoville.com/2019/02/13/certificates-of-competency-for-nominees-to-be-chiefs-of-mission-1980-2014/)
 - [Chance-Corrected Measures of Foreign Policy Similarity](https://doi.org/10.7910/DVN/ALVXLM)
 - [Change in Source of Leader Support](http://www.chisols.org/)