id,node_id,number,state,locked,title,user,user_label,body,created_at,updated_at,closed_at,merged_at,merge_commit_sha,assignee,assignee_label,milestone,milestone_label,draft,head,base,author_association,repo,repo_label,url,merged_by,merged_by_label,auto_merge
181600926,MDExOlB1bGxSZXF1ZXN0MTgxNjAwOTI2,204,closed,0,Initial units support,45057,russss,"Add support for specifying units for a column in metadata.json and rendering them on display using [pint](https://pint.readthedocs.io/en/latest/).

Example table metadata:
```json
                ""license_frequency"": {
                    ""units"": {
                        ""frequency"": ""Hz"",
                        ""channel_width"": ""Hz"",
                        ""height"": ""m"",
                        ""antenna_height"": ""m"",
                        ""azimuth"": ""degrees""
                    }
                }
```

[Example result](https://wtr-api.herokuapp.com/wtr-663ea99/license_frequency/1)

This works surprisingly well! I'd like to add support for using units when querying but this is PR is pretty usable as-is.

(Pint doesn't seem to support decibels though - it thinks they're decibytes - which is an annoying omission.)

(ref ticket #203)",2018-04-13T21:32:49Z,2018-04-14T09:44:33Z,2018-04-14T03:32:54Z,2018-04-14T03:32:54Z,ec6abc81e433c9bac1b9f085111785fc227e9e34,,,,,0,67c20a98a0cbb59a10247a49320c2feb7d0b1b41,fb988ace7c7e2bee5ac142a0eab22431d0675a77,CONTRIBUTOR,107914493,datasette,https://github.com/simonw/datasette/pull/204,,,
181642114,MDExOlB1bGxSZXF1ZXN0MTgxNjQyMTE0,205,closed,0,Support filtering with units and more,45057,russss,"The first commit:
* Adds units to exported JSON
* Adds units key to metadata skeleton
* Adds some docs for units

The second commit adds filtering by units by the first method I mentioned in #203:
![image](https://user-images.githubusercontent.com/45057/38767463-7193be16-3fd9-11e8-8a5f-ac4159415c6d.png)

[Try it here](https://wtr-api.herokuapp.com/wtr-663ea99/license_frequency?frequency__gt=50GHz&height__lt=50ft). I think it integrates pretty neatly.

The third commit adds support for registering custom units with Pint from metadata.json. Probably pretty niche, but I need decibels!",2018-04-14T10:47:51Z,2018-04-14T15:24:04Z,2018-04-14T15:24:04Z,,ed059c70e87a2930206652621e23a55167aa57c1,,,,,0,eb3a37c34813ecbbfdae015305fec1f2a4ec27a5,6b15a53cd3cd40880a5e2d38827d5fac10e4bb5f,CONTRIBUTOR,107914493,datasette,https://github.com/simonw/datasette/pull/205,,,
181644805,MDExOlB1bGxSZXF1ZXN0MTgxNjQ0ODA1,206,closed,0,Fix sqlite error when loading rows with no incoming FKs,45057,russss,"This fixes `ERROR: conn=<sqlite3.Connection object at 0x10bbb9f10>, sql
= 'select ', params = {'id': '1'}` caused by an invalid query loading incoming FKs when none exist.

The error was ignored due to async but it still got printed to the console.",2018-04-14T12:08:17Z,2018-04-14T14:32:42Z,2018-04-14T14:24:25Z,2018-04-14T14:24:25Z,1cc5161089e559c8b16049b20f7a5b3a43290c21,,,,,0,93b038e2469bee07d36ae8a943aab8b9d8610c1d,ec6abc81e433c9bac1b9f085111785fc227e9e34,CONTRIBUTOR,107914493,datasette,https://github.com/simonw/datasette/pull/206,,,
181647717,MDExOlB1bGxSZXF1ZXN0MTgxNjQ3NzE3,207,closed,0,Link foreign keys which don't have labels,45057,russss,"This renders unlabeled FKs as simple links. I can't see why this would cause any major problems.

![image](https://user-images.githubusercontent.com/45057/38768722-ea15a000-3fef-11e8-8664-ffd7aa4894ea.png)

Also includes bonus fixes for two minor issues:

* In foreign key link hrefs the primary key was escaped using HTML escaping rather than URL escaping. This broke some non-integer PKs.
* Print tracebacks to console when handling 500 errors.",2018-04-14T13:27:14Z,2018-04-14T15:00:00Z,2018-04-14T15:00:00Z,2018-04-14T15:00:00Z,f2b940d6026677f6859d46a4f16fa402745d261d,,,,,0,d9858672da8f74e5530deead140e2e633e1c2627,ec6abc81e433c9bac1b9f085111785fc227e9e34,CONTRIBUTOR,107914493,datasette,https://github.com/simonw/datasette/pull/207,,,
181654839,MDExOlB1bGxSZXF1ZXN0MTgxNjU0ODM5,208,closed,0,Return HTTP 405 on InvalidUsage rather than 500,45057,russss,"This also stops it filling up the logs. This happens for HEAD requests at the moment - which perhaps should be handled better, but that's a different issue.",2018-04-14T16:12:50Z,2018-04-14T18:00:39Z,2018-04-14T18:00:39Z,2018-04-14T18:00:39Z,efbb4e83374a2c795e436c72fa79f70da72309b8,,,,,0,20e5fcf827046adf76968d0e58f47e0b7d9271c3,8d394586f55bc4b8ab70476968d08fb6ec8339e5,CONTRIBUTOR,107914493,datasette,https://github.com/simonw/datasette/pull/208,,,