The full command name is more expressive.

The version of SQLite used by Travis is outdated. We need to install a
newer version.

Our general contract in Active Record is that strings are assumed to be
SQL literals, and symbols are assumed to reference a column. If a from
clause is given, we shouldn't include the table name, but we should
still quote the value as if it were a column.

Upon fixing this, the tests were still failing on SQLite. This was
because the column name being returned by the query was `"\"join\""`
instead of `"join"`. This is actually a bug in SQLite that was fixed a
long time ago, but I was using the version of SQLite included by OS X
which has this bug. Since I'm guessing this will be a common case for
contributors, I also added an explicit check with a more helpful error
message.

Fixes #20360

Add CHANGELOG entry for #17654

match method doc fix [ci skip]

match method without setting `:via` option has been deprecated

fix minor typo

[ci skip] match without via is now deprecated

Add tmp directory before touching

See #20299.

A lot of scripts assumes the existence of this folder and most would fail if it
is absent.

One example of this is `rake restart` (before the previous commit) – it tries to
`touch tmp/restart.txt`, which would fail if `tmp` does not exist, which was the
case for a freshly-cloned project as `tmp` is `.gitignored` by default.

See #20299.

[Yoong Kang Lim, Sunny Juneja]

In restart.rake, the creation of tmp/restart.txt
would fail if the tmp folder does not exist in the
app. This is a problem because apps cloned using
git would not have the tmp folder, as the folder is
in .gitignore. This commit creates the tmp folder
if it does not exist.

Fixes #20299

[Yoong Kang Lim, Sunny Juneja]

It was removed when we removed mocha at
5a6ae7f7

formatting changes

This partially reverts commit ac02df5c.

[ci skip]

minor text change [ci skip]

Revert "Replace use of alias chains with prepend at core_ext/date and…

  not require mail file

  ```
  it added in this commit (https://github.com/rails/rails/commit/2a25c4ce6da6ea23ebdf44e7eb2d2441dbea20a1), now no warnings occur.
  ```

Update docs for ActiveRecord `serialize`

[ci skip]

For certain column types, using `serialize` is unnecessary, or the user
may get unexpected contents back from the DB adapter (which is handling
some basic deserialization for them). Call this out in the
documentation.

For background, see:

    https://gist.github.com/ernie/33f75f2294885b9806f9
    https://twitter.com/erniemiller/status/604262907442905090

Bundler 1.10 should work now!

Remove unused code.

Code was moved into the `assign` method.

Fix warning about ambiguous first argument

This reverts commit 81b42970.

This reverts commit 410d246b.

This reverts commit 9ff901bd.

Replace use of alias chains with prepend at core_ext/date and core_ext/time