Merge pull request #1047 from PyThaiNLP/start-beta1

PyThaiNLP v5.1.0-beta1

Merge pull request #1027 from PyThaiNLP/release-5.0.5

PyThaiNLP v5.0.5

PyThaiNLP v5.0.4

## What's Changed
* Fixed #914 by @wannaphong in #917

**Full Changelog**: v5.0.3...v5.0.4

PyThaiNLP v5.0.3

PyThaiNLP v5.0.2

Fixed import crf #901

PyThaiNLP 5.0.0

PyThaiNLP 5.0.0beta1

PyThaiNLP 5.0.0dev2

PyThaiNLP v5.0.0dev1