Implemented concurrent encoding and converting of sequences for data binarization
# [Codecov](https://codecov.io/gh/huggingface/transformers/pull/1969?src=pr&el=h1) Report
> Merging [#1969](https://codecov.io/gh/huggingface/transformers/pull/1969?src=pr&el=desc) into [master](https://codecov.io/gh/huggingface/transformers/commit/49108288ba6e6dcfe554d1af98699ae7a1e6f39c?src=pr&el=desc) will **increase** coverage by `0.29%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/huggingface/transformers/pull/1969/graphs/tree.svg?width=650&token=9qOlN6Hb1c&height=150&src=pr)](https://codecov.io/gh/huggingface/transformers/pull/1969?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master    #1969      +/-   ##
==========================================
+ Coverage   83.97%   84.26%   +0.29%     
==========================================
  Files         105      104       -1     
  Lines       15529    15431      -98     
==========================================
- Hits        13040    13003      -37     
+ Misses       2489     2428      -61
```


| [Impacted Files](https://codecov.io/gh/huggingface/transformers/pull/1969?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [transformers/configuration\_utils.py](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree#diff-dHJhbnNmb3JtZXJzL2NvbmZpZ3VyYXRpb25fdXRpbHMucHk=) | `92.1% <0%> (-0.11%)` | :arrow_down: |
| [transformers/tokenization\_utils.py](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree#diff-dHJhbnNmb3JtZXJzL3Rva2VuaXphdGlvbl91dGlscy5weQ==) | `92.14% <0%> (-0.09%)` | :arrow_down: |
| [transformers/modeling\_tf\_utils.py](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree#diff-dHJhbnNmb3JtZXJzL21vZGVsaW5nX3RmX3V0aWxzLnB5) | `92.68% <0%> (-0.05%)` | :arrow_down: |
| [transformers/modeling\_utils.py](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree#diff-dHJhbnNmb3JtZXJzL21vZGVsaW5nX3V0aWxzLnB5) | `89.43% <0%> (-0.03%)` | :arrow_down: |
| [transformers/configuration\_distilbert.py](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree#diff-dHJhbnNmb3JtZXJzL2NvbmZpZ3VyYXRpb25fZGlzdGlsYmVydC5weQ==) | `89.74% <0%> (ø)` | :arrow_up: |
| [transformers/configuration\_auto.py](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree#diff-dHJhbnNmb3JtZXJzL2NvbmZpZ3VyYXRpb25fYXV0by5weQ==) | `59.45% <0%> (ø)` | :arrow_up: |
| [transformers/tests/tokenization\_tests\_commons.py](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree#diff-dHJhbnNmb3JtZXJzL3Rlc3RzL3Rva2VuaXphdGlvbl90ZXN0c19jb21tb25zLnB5) | `100% <0%> (ø)` | :arrow_up: |
| [transformers/modeling\_distilbert.py](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree#diff-dHJhbnNmb3JtZXJzL21vZGVsaW5nX2Rpc3RpbGJlcnQucHk=) | `95.87% <0%> (ø)` | :arrow_up: |
| [transformers/modeling\_auto.py](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree#diff-dHJhbnNmb3JtZXJzL21vZGVsaW5nX2F1dG8ucHk=) | `31.81% <0%> (ø)` | :arrow_up: |
| [transformers/tokenization\_auto.py](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree#diff-dHJhbnNmb3JtZXJzL3Rva2VuaXphdGlvbl9hdXRvLnB5) | `45.94% <0%> (ø)` | :arrow_up: |
| ... and [20 more](https://codecov.io/gh/huggingface/transformers/pull/1969/diff?src=pr&el=tree-more) | |

------

[Continue to review full report at Codecov](https://codecov.io/gh/huggingface/transformers/pull/1969?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/huggingface/transformers/pull/1969?src=pr&el=footer). Last update [4910828...265dbe8](https://codecov.io/gh/huggingface/transformers/pull/1969?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
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