Exclude conda-tree from depends output

[captaincoordinates]

Thanks for the really helpful tool!

Could we please have the option to exclude the conda-tree dependency chain from deptree and other commands?

[rvalieris]

hello,

yes, having an way to exclude undesired results from deptree sounds like a good idea, I will look into that.

[rvalieris]

Added a --exclude option to remove some packages from the tree.

also I documented the usage of conda-tree as a conda sub-command check it out, that way you don't need to install conda-tree on every env.