Snorkel

[Breaking Changes]

* PR 1535: Refactor baseline model imports in snorkel.labeling.model
* Now, from `from snorkel.labeling import MajorityLabelVoter, LabelModel`
can be expressed `from snorkel.labeling.model import MajorityLabelVoter, LabelModel`

[Added]

* PR 1533: Allow option to save optimizer state in Trainer
* PR 1523: Add GPU option for spaCy preprocessor

[Changed]

* PR 1540: Fix squeeze bug in `to_int_label_array` function
* PR 1520: Fix error bucket documentation in snorkel.analysis.error_analysis

[Contributors]

Thanks to rjurney, ptrcklv for recent contributions!

[Changed]

* PR 1502: Faster symmetry breaking in LabelModel using Munkres algorithm

[Breaking Changes]

* PR 1481: removed fault tolerant mode for labeling functions

[Added]

* PR 1481: fault tolerant mode for appliers

[Changed]

* PR 1450, 1467: ignore abstains in scoring, except coverage
* PR 1463: serialize all attributes of label model
* PR 1466: fix label model GPU training option
* PR 1477, 1492: pin dependency versions

[Removed]

* PR 1454: `set_seed` utility removed

[Contributors]

Thanks to HiromuHota, ferhatelmas, and garaud for their recent contributions!

[Breaking Changes]

* PR 1453: `SlicingClassifier` renamed to `SliceAwareClassifier`

[Added]

* PR 1451: add heuristic for breaking symmetry in multiple label model optima case
* PR 1442: integration test for `MultitaskClassifier`

[Changed]

* PR 1444: fix label model weight clamping behavior
* PR 1445: fix JSON log writer
* PR 1447: fix correct/incorrect count bug in `LFAnalysis`
* PR 1428, 1449: catch invalid label model inputs
* PR 1441: make inputs to `Scorer.score` optional

Version 0.9.0 is a complete redesign of the Snorkel library.
There's too much added, changed, and removed to list in this entry.
For more information on the release,
[check out the project homepage](https://snorkel.org).
From here forward, we'll keep a detailed changelog.