Cometx

Changes new in this version:
1. Bug fixes for `cometx copy`
2. Move shuffle to `cometx.tools.dataset`

Changes in this version since last release:
1. added `cometx copy`
2. added `cometx.api.API` panel functions (get, download, upload)
3. added `cometx.tools.pointcloud`

New in this release:
1. Added ability to delete assets in an experiment, project, or workspace: `cometx delete COMET-PATH --type TYPE|all`
2. Added option to log all items to an experiment, or create a new experiment: `cometx log COMET-PATH --type all`
3. Added option to change an other key:value: `comet log COMET-PATH --type other --set "key:value"`
4. Added `cometx reproduce` command

Changes in this release:
* Initial release
* Change copy_to_tmp to True to reflect change in comet_ml