v1.3.2

Highlighted changes:

New Tasks

• Masked Language Modeling (for RoBERTa and ALBERT) (#1030) (@pruksmhc and @phu-pmh)
• Sentence Order Prediction (for ALBERT) (#1061) (@pruksmhc and @phu-pmh)

Minor changes and fixes

• Fixed target training data fraction bug where target training data fraction was not reflected in logging and scheduler (#1071) (@HaokunLiu)
• Fixed target train data fraction overwriting pretrain data fraction bug (#1070) (@pyeres)
• Added CONTRIBUTING.md (#1036, #1038) (@pyeres)

Dependency changes

• transformers 2.3.0 → transformers 2.6.0 (#1059) (@zphang)