[FEATURE] version upgrade

[KenelmQLH]

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Description

(Brief description on what this PR is about)

What does this implement/fix? Explain your changes.

Merge dev branches into master

Pull request type

• [DATASET] Add a new dataset
• [BUGFIX] Bugfix
• [FEATURE] New feature (non-breaking change which adds functionality)
• [BREAKING] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [STYLE] Code style update (formatting, renaming)
• [REFACTOR] Refactoring (no functional changes, no api changes)
• [BUILD] Build related changes
• [DOC] Documentation content changes
• [OTHER] Other (please describe):

Changes

1. add BERT and pretrained model (luna_bert)
2. speed up the process in sif
3. handling OOV in word2vec
4. add English tutorials
5. add api docs and prettify tutorials
6. fix the np.error in gensim_vec.W2V.infer_vector
7. fix the parameters lost in tokenizationn

Does this close any currently open issues?

N/A

Any relevant logs, error output, etc?

N/A

Checklist

Before you submit a pull request, please make sure you have to following:

Essentials

• PR's title starts with a category (e.g. [BUGFIX], [FEATURE], [BREAKING], [DOC], etc)
• Changes are complete (i.e. I finished coding on this PR)
• All changes have test coverage and al tests passing
• Code is well-documented (extended the README / documentation, if necessary)
• If this PR is your first one, add your name and github account to AUTHORS.md

Comments

• If this change is a backward incompatible change, why must this change be made.
• Interesting edge cases to note here

[codecov-commenter]

Codecov Report

Merging #106 (9071cca) into master (1a7fe0c) will increase coverage by 0.14%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           master      #106      +/-   ##
===========================================
+ Coverage   99.85%   100.00%   +0.14%     
===========================================
  Files          46        48       +2     
  Lines        1364      1489     +125     
===========================================
+ Hits         1362      1489     +127     
+ Misses          2         0       -2     

Impacted Files	Coverage Δ
EduNLP/Formula/Formula.py	100.00% <ø> (ø)
EduNLP/ModelZoo/rnn/rnn.py	100.00% <ø> (ø)
EduNLP/ModelZoo/utils/masker.py	100.00% <ø> (ø)
EduNLP/ModelZoo/utils/padder.py	100.00% <ø> (ø)
EduNLP/Pretrain/gensim_vec.py	100.00% <ø> (ø)
EduNLP/SIF/segment/segment.py	100.00% <ø> (ø)
EduNLP/SIF/tokenization/formula/ast_token.py	100.00% <ø> (ø)
EduNLP/SIF/tokenization/formula/formula.py	100.00% <ø> (ø)
EduNLP/SIF/tokenization/formula/linear_token.py	100.00% <ø> (ø)
EduNLP/SIF/tokenization/text/tokenization.py	100.00% <ø> (ø)
... and 16 more

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