Legacystamps

**Fixes**
* Fix installation only installing it to the relevant `bin` directory and not as a package

**Updates**
* Added option to specify download directory.
* Added tests for Python 3.8, 3.9 and 3.10.
* Changed setup.

**Fixes**
* Added more docstrings.

**Updates**
* Default layer is now DR9 (specifically `ls-dr9`)
* Added autoscale option to increase pixel scale in factors of 0.262" (the tractor's approximate native pixel scale) in case the cutout would exceed the server's limit of 3000 pixels.
* Added warnings to inform user of exceeding image size limits and image truncation (if applicable).

**Fixes**
* SSL certificate verification re-enabled.

First official public release.