This month sees a number of changes.
Dropping Romaji Support
The romaji data from Japan Post is only updated twice a year or so, so it's often out of sync with the other files. Keeping it in sync worked at first, but starting a few months ago some unusual cases caused postal codes to throw exceptions due to missing romaji, and the fix wasn't as simple as I expected. After that fix another case occurred. Since the romaji data was low quality anyway it's been removed; if you need romaji support look at [cutlet](https://github.com/polm/cutlet) or open an issue.
Multithread Support
Since the change to a sqlite backend, posuto open a DB connection on import and manages it. In typical use cases that's fine, but in multithreaded environment it will generate warnings, and could potentially cause issues. This release introduces a wrapper class you can use when you need more control over DB connections, see the [docs](https://github.com/polm/posuto#multi-threaded-environments) for details.
Monthly Updates
This month had a number of interesting changes. The photo below is of the new World Trade Center South Annex; I just visited the observation deck at the current World Trade Center before it's knocked down.
![IMG_20210107_152354040_HDR](https://user-images.githubusercontent.com/286278/106267279-c2da2b80-626c-11eb-9097-38403c341f0e.jpg)
- 世界貿易センタービルディング南館 added many codes; I just visited the soon-to-close non-南館 building
- In Yamaguchi a new 小郡令和 neighborhood [was created](https://www3.nhk.or.jp/lnews/yamaguchi/20210127/4060008519.html)
- In Shizuoka a neighborhood name was corrected from 桜が丘 to 桜ガ丘
- In Oita a neighborhood name was corrected from 千歳木 to 千蔵木