Globus-cli

Bugfixes:

* Fix some help options not being correctly populated

Enhancements:

* Add handling for ConsentRequired errors when interacting with newer versions
of Globus Connect Server

Other:

* Web documentation is now autogenerated as part of the release process

Enhancements:

* Add a new command, `globus endpoint set-subscription-id`, which allows
Subscription Managers to set the subscription on Endpoints where they may
not have administrative privileges

Bugfixes:

* If a new `refresh_token` is issued when a token refreshes, it will be stored
correctly.

* Paths being joined for `--batch` mode for `globus transfer` and
`globus delete` on Windows were joined incorrectly with the platform path
separator (`\`). They are now joined correctly with `/`

Enhancements:

* Error and hint outputs are styled using colors when the output is being
written to a terminal.

** Supports macOS and Linux by default using ANSI colors.

** You can install colorama (`pip install colorama`) in the same
environment as the CLI to get color support on Windows.

* Endpoints whose activation requirements do not include any myproxy
requirements now give an informative error message if myproxy activation is
attempted

* Add support for `--external-checksum` and `--checksum-algorithm` in
`globus transfer` commands

Other:

* Internally, use the `globus_sdk.IdentityMap` construct, not a custom mapping type.

* Remove official support for python3.4, add support for python3.8

* Improvements to help text

Enhancements:

* Add `--limit <count>` option to `globus endpoint search` command.

Other:

* Upgrade to click version 7.

* Rename `globus session boost` command to `globus session update`.

Enhancements:

* Add `--timeout-exit-code` option to override the default exit
code (1) for commands that wait on tasks. For example, `globus task wait <task_id> --timeout 60 --timeout-exit-code 0`.