Merge Bundler 2.1.0.pre.3

Features:
    - Add caller information to some deprecation messages to make them easier to fix [#7361](https://github.com/bundler/bundler/pull/7361)
    - Reconcile `bundle cache` vs `bundle package` everywhere. Now in docs, CLI help and everywhere else `bundle cache` is the preferred version and `bundle package` remains as an alias [#7389](https://github.com/bundler/bundler/pull/7389)
    - Display some basic `bundler` documentation together with ruby's RDoc based documentation [#7394](https://github.com/bundler/bundler/pull/7394)

  Bugfixes:
    - Fix typos deprecation message and upgrading docs [#7374](https://github.com/bundler/bundler/pull/7374)
    - Deprecation warnings about `taint` usage on ruby 2.7 [#7385](https://github.com/bundler/bundler/pull/7385)
    - Fix `--help` flag not correctly delegating to `man` when used with command aliases [#7388](https://github.com/bundler/bundler/pull/7388)
    - `bundle add` should cache newly added gems if an application cache exists [#7393](https://github.com/bundler/bundler/pull/7393)
    - Stop using an insecure folder as a "fallback home" when user home is not defined [#7416](https://github.com/bundler/bundler/pull/7416)
    - Fix `bundler/inline` warning about `Bundler.root` redefinition [#7417](https://github.com/bundler/bundler/pull/7417)

man/bundle-viz.1

@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BUNDLE\-VIZ" "1" "September 2019" "" ""
+.TH "BUNDLE\-VIZ" "1" "November 2019" "" ""
 .
 .SH "NAME"
 \fBbundle\-viz\fR \- Generates a visual dependency graph for your Gemfile