Earthmover

<details>
<summary>Released 2024-09-04</summary>

* feature: implementing a limit_rows operation
* feature: add support for a `require_rows` boolean or non-negative int on any node
* feature: add support for Jinja in a destination node header and footer
* bugfix: union fails with duplicate columns

</details>

<details>
<summary>Released 2024-08-07</summary>

* feature: add `json_array_agg` function to `group_by` operation
* feature: select all columns using "*" in `modify_columns` operation
* internal: set working directory to the location of the `earthmover.yaml` file
* documentation: add information on `earthmover init` and `earthmover clean` to the README
* bugfix: fix bug with `earthmover clean` that could have removed earthmover.yaml files

</details>

<details>
<summary>Released 2024-07-12</summary>

* feature: add `earthmover init` command to initialize a new sample project in the expected bundle structure
* internal: expand test run to include the new `debug` and `flatten` operations, as well as a nested JSON source file
* internal: improve customization in write behavior in new file destinations
* bugfix: Fix bug when writing null values in `FileDestination`

</details>

<details>
<summary>Released 2024-06-26</summary>

* hotfix: Fix bug when writing out JSON in `FileDestination`

</details>

<details>
<summary>Released 2024-06-18</summary>

* hotfix: Resolve incompatible package dependencies
* hotfix: Fix type casting of nested JSON for destination templates

</details>

<details>

<summary>Released 2024-06-14</summary>

* feature: Add `DebugOperation` for logging data head, tail, columns, or metadata midrun
* feature: Add `FlattenOperation` for splitting and exploding string columns into values
* feature: Add optional 'fill_missing_columns' field to `UnionOperation` to fill disjunct columns with nulls, instead of raising an error (default `False`)
* feature: Add `git_auth_timeout` config when entering Git credentials during package composition
* feature: [Add `earthmover clean` command that removes local project artifacts](https://github.com/edanalytics/earthmover/pull/87)
* feature: only output compiled template during `earthmover compile`
* feature: Render full row into JSON lines when `template` is undefined in `FileDestination`
* internal: Move `FileSource` size-checking and `FtpSource` FTP-connecting from compile to execute
* internal: Move template-file check from compile to execute in `FileDestination`
* internal: Allow filepaths to be passed to an optional `FileSource`, and check for file before creating empty dataframe
* internal: Build an empty dataframe if an empty folder is passed to an optional `FileSource`
* internal: fix some examples in README
* internal: remove GitPython dependency
* bugfix: fix bug in `FileDestination` where `linearize: False` resulted in BOM characters
* bugfix: fix bug where nested JSON would be loaded as a stringified Python dictionary
* bugfix: [Ensure command list in help menu and log output is always consistent](https://github.com/edanalytics/earthmover/pull/87)
* bugfix: fix bug in `ModifyColumnsOperation` where `__row_data__` was not exposed in Jinja templating

</details>