DEPR: correct locations to access public tslib objects
You got currently:

```
In [4]: pd.tslib.Timestamp
/home/joris/miniconda3/envs/dev/bin/ipython:1: FutureWarning: pandas.tslib.Timestamp is deprecated. 
Please use pandas._libs.tslib.Timestamp instead.
  #!/home/joris/miniconda3/envs/dev/bin/python
Out[4]: pandas._libs.tslib.Timestamp
```

and 

```
In [2]: tslib.OutOfBoundsDatetime
/home/joris/miniconda3/envs/dev/bin/ipython:1: FutureWarning: pandas.tslib.OutOfBoundsDatetime is deprecated. 
Please use pandas._libs.tslib.OutOfBoundsDatetime instead.
  #!/home/joris/miniconda3/envs/dev/bin/python
Out[2]: pandas._libs.tslib.OutOfBoundsDatetime
```


# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/15897?src=pr&el=h1) Report
> Merging [#15897](https://codecov.io/gh/pandas-dev/pandas/pull/15897?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/ca8ef494df8c841ccfde779b5b120ffea218ed46?src=pr&el=desc) will **increase** coverage by `<.01%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/15897/graphs/tree.svg?width=650&height=150&src=pr&token=eZ4WkYLtcO)](https://codecov.io/gh/pandas-dev/pandas/pull/15897?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #15897      +/-   ##
==========================================
+ Coverage   90.97%   90.97%   +<.01%     
==========================================
  Files         145      145              
  Lines       49496    49496              
==========================================
+ Hits        45027    45028       +1     
+ Misses       4469     4468       -1
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.73% <100%> (ø)` | :arrow_up: |
| #single | `40.63% <100%> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/15897?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/\_\_init\_\_.py](https://codecov.io/gh/pandas-dev/pandas/pull/15897?src=pr&el=tree#diff-cGFuZGFzL19faW5pdF9fLnB5) | `92.68% <100%> (ø)` | :arrow_up: |
| [pandas/core/common.py](https://codecov.io/gh/pandas-dev/pandas/pull/15897?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tbW9uLnB5) | `91.03% <0%> (+0.34%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/15897?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/15897?src=pr&el=footer). Last update [ca8ef49...15288e7](https://codecov.io/gh/pandas-dev/pandas/pull/15897?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments). thanks!