Resolve "add tracability attributes to grid (and maybe tile) files"

Closes #3

See merge request !6

write a conda environment.yml to the python_runtime/ folder so that we can more easily audit what's included in our runtime between builds

2020 02 10 beta1 high priority

Closes #14 and #9

See merge request !5

add compression to the tiles produced by satpy. also gets us other satpy updates like the static scaling factors. (fixes #14)

add an example usage message and switch to using RawTextHelpFormatter so that the newlines are preserved in our description (#11)

This PR grew a bit beyond just adding satpy to our buildbucket!

See merge request !4

https://github.com/deeplycloudy/glmtools/commit/caa7d5af4a27060c56258c9bf73fa6a13891b0e1

migrate the pip dependencies from package.sh to our conda environment file. this will include them in our buildbucket & keeps our package script leaner.

glm_grids_updates

See merge request !3

build with CI & update to glmtools' master branch

See merge request !1

adds a .gitlab-ci.yml which builds the package and uploads artifacts. we also now use the master branch from glmtools.