*   `tf.contrib`:

    *   `tf.contrib` has been deprecated, and functionality has been either
        migrated to the core TensorFlow API, to an ecosystem project such as
        [tensorflow/addons](https://www.github.com/tensorflow/addons) or
        [tensorflow/io](https://www.github.com/tensorflow/io), or removed
        entirely.
    *   Remove `tf.contrib.timeseries` dependency on TF distributions.

.input-group-text + .input-group-text,\n  .input-group-text + .btn {\n    margin-left: -$input-border-width;\n  }\n}\n\n.input-group-prepend { margin-right: -$input-border-width; }\n.input-group-append { margin-left: -$input-border-width; }\n\n\n// Textual addons\n//\n// Serves as a catch-all element for any text or radio/checkbox input you wish\n// to prepend or append to an input.\n\n.input-group-text {\n  display: flex;\n  align-items: center;\n  padding: $input-padding-y $input-padding-x;\n  margin-bottom:...

.input-group-text + .input-group-text,\n  .input-group-text + .btn {\n    margin-left: -$input-border-width;\n  }\n}\n\n.input-group-prepend { margin-right: -$input-border-width; }\n.input-group-append { margin-left: -$input-border-width; }\n\n\n// Textual addons\n//\n// Serves as a catch-all element for any text or radio/checkbox input you wish\n// to prepend or append to an input.\n\n.input-group-text {\n  display: flex;\n  align-items: center;\n  padding: $input-padding-y $input-padding-x;\n  margin-bottom:...