Support Kotlin 1.3.71

[AlexeySoshin]

This PR updates version of:

• Kotlin 1.1.51 -> 1.3.71
• Gradle 3.4.1 -> 6.0.1
• Travis OpenJDK 8 -> 11
• Jacoco 0.7~ -> 0.8.5

[AlexeySoshin]

@VerachadW WDYT?

[VerachadW]

Hi @AlexeySoshin , it good for me. Just wondering if you want to bump to 1.3.72 instead?

[codecov-commenter]

Codecov Report

Merging #35 into master will increase coverage by 4.98%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master      #35      +/-   ##
============================================
+ Coverage     83.76%   88.75%   +4.98%     
+ Complexity       68       65       -3     
============================================
  Files            16       16              
  Lines           154      160       +6     
  Branches         28       26       -2     
============================================
+ Hits            129      142      +13     
- Misses            9       10       +1     
+ Partials         16        8       -8     

Impacted Files	Coverage Δ	Complexity Δ
core/src/main/kotlin/me/lazmaid/kraph/Kraph.kt	96.72% <100.00%> (+11.53%)	14.00 <0.00> (+2.00)
...c/main/kotlin/me/lazmaid/kraph/lang/GraphQLNode.kt	72.00% <100.00%> (-1.08%)	16.00 <1.00> (-2.00)
.../main/kotlin/me/lazmaid/kraph/lang/SelectionSet.kt	100.00% <100.00%> (ø)	3.00 <0.00> (ø)
...src/main/kotlin/me/lazmaid/kraph/lang/DataEntry.kt	100.00% <0.00%> (ø)	0.00% <0.00%> (-1.00%)
...rc/main/kotlin/me/lazmaid/kraph/lang/relay/Node.kt	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...in/me/lazmaid/kraph/lang/relay/CursorConnection.kt	100.00% <0.00%> (ø)	1.00% <0.00%> (ø%)
...src/main/kotlin/me/lazmaid/kraph/lang/Operation.kt	77.77% <0.00%> (+17.77%)	7.00% <0.00%> (ø%)

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[AlexeySoshin]

Hi @AlexeySoshin , it good for me. Just wondering if you want to bump to 1.3.72 instead?

That's a good idea.
Done!

[VerachadW]

LGTM 👍

[VerachadW]

Not sure why the travis CI status is not updated here, but since it passed. I will merge now.