Bump mobx from 3.4.1 to 5.7.0

[dependabot-preview]

Bumps mobx from 3.4.1 to 5.7.0.

Changelog

Sourced from mobx's changelog.

5.7.0 / 4.7.0

• Upgraded typings to TypeScript 3
• Fixed #1742, change detection fails when multiple mobx instances were active.
• Fixed #1624, use built-in flow types for iterators
• Fixed #1777 through #1826, stack overflow exception, in development mode, when using [**computed**](https://github.com/computed) on a React component. The MobX 5 behavior here has been reverted to the MobX 4 behavior.

5.6.0 / 4.6.0

• keepAlive has become smarter and won't recomputed computed values that are kept alive, as long as they aren't read. Implements #1534
• Fixed #1796, undeleting a property that had an initial value of undefined was undetected
• Improved Flow typings, see #1794 and #1786

5.5.2 / 4.5.2

• Fixed bug in toJS not handling null values correctly. Fixes #1557 through #1783 by [wangyiz4262](https://github.com/wangyiz4262)

5.5.1 / 4.5.1

• toJS now has a recurseEverything everything option, that even detects and converts observable objects that are "behind" non-observable objects. See #1699 by wangyiz4262
• Added flow typings form comparer, see #1751 by pdong
• Update flow typings for configuration options, #1772 by alexandersorokin

5.5.0 / 4.5.0

(Minor version of 5 was bumped significantly to make the number better correlate together :-))

• Fixed #1740: combining decorators and extendObservable in a class constructor caused errors to be thrown
• Fixed #1739:
  • Proxies: delete-ing a property was not always picked up by the reactivity system
  • Non-proxies: remove()-ing a property was not always picked up by the has() and get() utilities
  • has now returns true for computed fields
  • get now returns a value for computed fields
• Introduced _allowStateChangeInsideComputed. Don't use it :-).
• MobX is now transpiled using babel 7

5.1.2 / 4.4.2

• Fixed #1650, decorating fields with the name toString does not behave correctly.

5.1.1 / 4.4.1

• Improved typings of decorate, see #1711 by makepost

5.1.0 / 4.4.0

• Improved handling of multiple MobX instances. MobX will no longer complain about being loaded multiple times (one should still prevent it though, to prevent blowing up bundle size!), but merge internal state by default. If multiple MobX versions need to be loaded, call configure({ isolateGlobalState: true }). Note that this means that observables from the different MobX instances won't cooperate. Fixes #1681, #1082
• enforceActions options now supports the values: "never", "observed" and "always" to make the behavior more clear. Fixes #1680, #1473

... (truncated)

Commits

• d55c50a Published version 5.7.0
• 0274b80 updated changelog
• fcb7554 Merge pull request #1826 from mobxjs/fix-computed-stack-overflow
• 8351262 Fixed stack overflow for computed on RN, fixes #1777
• 16f8586 Upgraded to TypeScript 3
• f5a5915 UNCHANGED token is now part of mobxGlobals, fixes #1742
• 2df55f1 Fixed flow iterator type, fixes #1624
• 857621c Published version 5.6.0
• 3a6b072 Fixed #1796, detect undelete of undefined property
• 4a274fa Merge pull request #1799 from mobxjs/smarter-keep-alive
• Additional commits viewable in compare view

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Superseded by #23.