#### Is this adding or improving a _feature_ or fixing a _bug_?
This should fix `Unable to get property 'childNodes' of undefined or null reference` error in IE11 when using slate-html-serializer and deserializing an empty string (#1757, #1756).
#### What's the new behavior?
The `defaultParseHtml` now returns an empty body element if the parsed body is null.
I tested this in the latest Chrome, Firefox and Safari, and they all seemed to work similarly. If the html param was an empty string, `parseFromString` returned a document element, which had a body property which was an empty body element. In IE11 though the body property was null, which caused the undefined or null reference later.
#### Have you checked that...?
* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
#### Is this adding or improving a _feature_ or fixing a _bug_?
bug
#### What's the new behavior?
Fix key duplication warning and deprecation
#### How does this change work?
<!--
If your change is non-trivial, please include a short description of how the new logic works, and why you decided to solve it the way you did. This is incredibly helpful so that reviewers don't have to guess based on the code.
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#### Have you checked that...?
<!--
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* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
#### Does this fix any issues or need any specific reviewers?
Fixes: https://github.com/ianstormtaylor/slate/issues/2088https://github.com/ianstormtaylor/slate/issues/2079
Reviewers: @
* Trying to use memoization and upgrade to react v16
* Fix error
* Fix error
* Fix handlers error
* Add annotation
* Remove EventHandlers
* No state
* Remove un-necessary polyfill
* Remove un-necessary polyfill
* Remove un-necessary handlers settings
* Early Return
* Fix Early Return
* Fix onChange
* Do not run onChange stack twice on same change
* Update annotation
* Better sense of resolve++
* Cache value in onChange and didMount
* Remove un-necessary rechack
* Renaming
* Remove change in leaf.js
* Handlers as this.handlers
* do not re-initialize change in onChange
* Re-run onChange stack only when change happens
* Update value when stack changes
* Rename to memoize-one
* queue changes
* Unify interface
* Fix bug
* Add document
* Remove id
* Do not use map
* Fix bug
* Fix eslint
* Fix update when props.value changes
* Add annotation
* Fix stack
* Inline queueChange
* Restore onChange
* restore onChange
* Refactor change and onChange
* Use onChange as the single interface for update
* Do not flushChange if inside event
* Give a warning about synchronous editor.change call
* Change isInChange in editor.change
* refactor resolution and tmp logic, cleanup code
#### Is this adding or improving a _feature_ or fixing a _bug_?
Debt.
#### What's the new behavior?
`createHyperscript` takes an options object that now looks for the `decorations` property instead of the `decorators` property
#### How does this change work?
Pretty straightforward rename of an option, then all of its uses and wherever the term decorators showed up in docs
#### Have you checked that...?
* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
#### Does this fix any issues or need any specific reviewers?
Fixes: #1996
Reviewers: @ianstormtaylor
#### Is this adding or improving a _feature_ or fixing a _bug_?
Bug.
#### What's the new behavior?
All normalizing change methods should use `normalize: false` otherwise the normalization can recurse and cause strange errors.
#### Have you checked that...?
<!--
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* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
#### Is this adding or improving a _feature_ or fixing a _bug_?
Example.
#### What's the new behavior?
Adds a new example that is an input event logger, for more easily seeing which input/keyboard/selection events are firing when editing in a Slate editor.
#### Have you checked that...?
* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
* Adds Unicode LF character to line endings for clipboard plaintext
This addresses https://github.com/ianstormtaylor/slate/issues/1932
* Fixes plaintext/unicode pastes not having line breaks
* Removes stray spaces for Prettier
* Refactors Value creation to save 4 lines
* Allows for Ctrl+Backspace on line start
Previously Ctrl+Backspace would do nothing instead of continuing on to the above block.
* Tests that deleteWordBackwards joins lines properly
* Adds Unicode LF character to line endings for clipboard plaintext
This addresses https://github.com/ianstormtaylor/slate/issues/1932
* Fixes plaintext/unicode pastes not having line breaks
* Removes stray spaces for Prettier
* Refactors Value creation to save 4 lines
* Run mocha test with module alias
* Running test with babel module alias
* Fix model alias
* Fix model alias
* Resolve module alias
* Running test with babel module alias
* Connect to codecov
* add codecov to travis
* stop if yarn test has errors
* Still cannot collect data from slate modules
* Try to check whether it works with codecov
* Move config to nycrc
* Remove nyc require
* Update nyc to use src
* better before_script
#### Is this adding or improving a _feature_ or fixing a _bug_?
Improvement.
#### What's the new behavior?
Adds a `Node.createRange` method for more easily creating ranges that are normalized to the current document. As well as a `Node.resolveRange` lower-level method for just doing the normalization on an existing range.
Later we can deprecate `Range.normalize` since it should be on the node instead.
#### Have you checked that...?
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* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
#### Does this fix any issues or need any specific reviewers?
Fixes: #2011
#### Is this adding or improving a _feature_ or fixing a _bug_?
Bug.
#### What's the new behavior?
Fixes selection operations from being duplicated.
#### How does this change work?
Previously the selection properties were compared by reference, but paths are immutable `List` objects, which always show up as having changed, resulting in extra selection operations that without any real changes. We now use `Immutable.is` to remove those duplicates, fixing the undo history stack.
#### Have you checked that...?
<!--
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-->
* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
#### Does this fix any issues or need any specific reviewers?
Fixes: #2006
