Bump JSS to ^8.1.0

[RikardGehlin]

Also fixed breaking changes from migration between 7.1.7 to 8.1.0 https://github.com/cssinjs/jss/blob/v8.1.0/changelog.md#800--2017-06-20

breaking changes were:

• moved DOM renderer
• deprecation of generateClassName option in jss.createStylesheet, now you have to provide createGenerateClassName factory when you create jss

[RikardGehlin]

as far as API surface isn't changed it's not a breaking change for consumers, but it's sort of big deal, so perhaps it's a minor release

[codecov[bot]]

Codecov Report

Merging #46 into master will increase coverage by 0.09%. The diff coverage is 90.9%.

@@            Coverage Diff             @@
##           master      #46      +/-   ##
==========================================
+ Coverage   94.11%   94.21%   +0.09%     
==========================================
  Files           4        4              
  Lines         119      121       +2     
==========================================
+ Hits          112      114       +2     
  Misses          7        7

Impacted Files	Coverage Δ
src/styleManager.js	96.92% <ø> (+1.03%)	:arrow_up:
src/ThemeProvider.js	80.76% <90.9%> (+5.76%)	:arrow_up:

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[RikardGehlin]

i dont know how to fix flow errors

[RikardGehlin]

@nathanmarks can you help?

[kof]

I think you should wait a bit, because @oliviertassinari is cooking something in this regard.

[iamstarkov]

sure, but we migrated it and fixed the breaking changes. we just dont know how to fix flow erros

[iamstarkov]

we need this because we need latest jss checked out in our projects for it to be possible to migrate to react-jss's theming

[iamstarkov]

btw, published as @iamstarkov/jss-theme-reactor@0.12.0

[oliviertassinari]

I'm working on a major styling upgrade on the Material-UI side, we would no longer rely on jss-theme-reactor. Some of the features this rewrite is unlocking:

• better perf
• theme nesting
• simpler injection order handling
• pure component logic dodge
• shorter className in production

[iamstarkov]

@oliviertassinari thats cool, but we do use jss-theme-reactor without material-ui, so we need release of jss-theme-reactor to depend on latest jss, so we can migrate to react-jss's theming. can we get such a release?

[iamstarkov]

so, just clarify we dont need new material-ui release, we need new release of jss-theme-reactor

[oliviertassinari]

@iamstarkov Oh but I don't have any admin right on this repository.

[iamstarkov]

@nathanmarks can you help?

[iamstarkov]

@nathanmarks ping