Paramtools

- Fix bug when using a `when` validator with `defer_validation`. (127)

- Allow comments in JSON files. (124)

python
In [1]: import paramtools

In [2]: s = """// this is my json file
...: // more comments here
...: /*
...: multi line comments?
...: */
...: {
...: "hello": "world",
...: "allows_urls": "http://double-slash-is-ok.com"
...: }"""

In [3]: paramtools.read_json(s)
Out[3]:
OrderedDict([('hello', 'world'),
('allows_urls', 'http://double-slash-is-ok.com')])

- Add `transaction` method for multi-stage updates. (123)
- Use Github Actions for CI. (123)

- New API for querying parameter values:

- Improvements for querying custom/nested values:

- Fix several ordering bugs affecting the order of schema vs parameter names in the output of `Parameters.dump` and the order of keys in value objects. (115)
- Expose argument to use the labels set in the `state` of the `Parameters` instance when selecting which values to include when calling `Parameters.dump`. (115)
- Use most up-to-date operator values when dumping a Parameter values to JSON. (118)

- Use `fsspec` to support a rich variety of inputs sources from local JSON files to files stored on GitHub, S3, or Google Cloud Storage. (111, 113)