Looper

Added
- `--portable` flag to `looper report` to create a portable version of the html report
- `--lump-j` allows grouping samples into a defined number of jobs

Changed
- `--lumpn` is now `--lump-n`
- `--lump` is now `--lump-s`

Added
- `looper link` creates symlinks for results grouped by record_identifier. It requires pipestat to be configured. [72](https://github.com/pepkit/looper/issues/72)
- basic tab completion.

Changed
- looper now works with pipestat v0.6.0 and greater.
- `looper table`, `check` now use pipestat and therefore require pipestat configuration. [390](https://github.com/pepkit/looper/issues/390)
- changed how looper configures pipestat [411](https://github.com/pepkit/looper/issues/411)
- initializing pipeline interface also writes an example `output_schema.yaml` and `count_lines.sh` pipeline

Fixed
- filtering via attributes that are integers.

Fixed
- fix `looper table` failing without `sample.protocol`

Changed
- correct `--looper_conifg` to `--looper-config`

Added

- ability to use PEPs from PEPhub without downloading project [341](https://github.com/pepkit/looper/issues/341)
- ability to specify pipeline interfaces inside looper config [Looper Config](https://looper.databio.org/en/dev/how_to_define_looper_config/)
- divvy re-integrated in looper
- divvy inspect -p package
- Looper will now check that the command path provided in the pipeline interface is callable before submitting.


Changed
- initialization of generic pipeline interface available using subcommand `init-piface`
- `looper report` will now use pipestat to generate browsable HTML reports if pipestat is configured.
- looper now works with pipestat v0.5.0.
- Removed --toggle-key functionality.
- Allow for user to input single integer value for --sel-incl or --sel-excl

Fixed
- Fix regression for var_templates expansion.

Fixed
- Fix for expanding paths properly.