Upgrade to new dokka

[arturbosch]

This checks if we finally can upgrade Gradle with the new dokka engine.
KtLint is not compatible with Kotlin 1.4-rc so I had to turn off detekt and formatting:test tasks

[BraisGabin]

The regression in the Compiler and ktlint not working on kotlin 1.4 are known issues right? I mean, both projects have an issue to track it.

[arturbosch]

The regression in the Compiler and ktlint not working on kotlin 1.4 are known issues right? I mean, both projects have an issue to track it.

Yes, KtLint tests against dev versions as of recently. The compiler bug is actually not a bug but a fix, the receiver is actually not needed anymore.

[arturbosch]

Being unable to upgrade the Kotlin version and having to turn off analysis because of a dependency, rises the question if we should move the formatting module outside the main repo again ...

[arturbosch]

 * What went wrong:
    An exception occurred applying plugin request [id: 'org.jetbrains.kotlin.jvm']
    > Failed to apply plugin [id 'org.jetbrains.kotlin.jvm']
       > The current Gradle version 5.0 is not compatible with the Kotlin Gradle plugin. Please use Gradle 5.3 or newer, or the previous version of the Kotlin plugin.

We need to update to 5.3 too.

[codecov]

Codecov Report

Merging #2931 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #2931   +/-   ##
=========================================
  Coverage     79.31%   79.31%           
  Complexity     2562     2562           
=========================================
  Files           432      432           
  Lines          7725     7725           
  Branches       1466     1466           
=========================================
  Hits           6127     6127           
  Misses          814      814           
  Partials        784      784           

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[arturbosch]

dokka changes its sorting for

detekt/detekt-api/src/main/kotlin/io/gitlab/arturbosch/detekt/api/Context.kt

Lines 13 to 45 in c6ff711

	interface Context {
	val findings: List<Finding>
	/**
	* Reports a single new violation.
	*/
	@Deprecated("Overloaded version with extra ruleSetId parameter should be used.")
	fun report(finding: Finding, aliases: Set<String> = emptySet())
	/**
	* Reports a single new violation.
	* By contract the implementation can check if
	* this finding is already suppressed and should not get reported.
	* An alias set can be given to additionally check if an alias was used when suppressing.
	* Additionally suppression by rule set id is supported.
	*/
	fun report(finding: Finding, aliases: Set<String> = emptySet(), ruleSetId: RuleSetId? = null) {
	report(finding, aliases, null)
	}
	/**
	* Same as [report] but reports a list of findings.
	*/
	@Deprecated("Overloaded version with extra ruleSetId parameter should be used.")
	fun report(findings: List<Finding>, aliases: Set<String> = emptySet())
	/**
	* Same as [report] but reports a list of findings.
	*/
	fun report(findings: List<Finding>, aliases: Set<String> = emptySet(), ruleSetId: RuleSetId? = null) {
	report(findings, aliases, null)
	}

so our verifyDocumentation will always fail.

I've opened Kotlin/dokka#1333 which is a major blocker for using the new dokka and therefore updating Gradle ...

[BraisGabin]

We should update our documentation too, right pointing the minimum version.

[arturbosch]

I've extracted the Kotlin and Gradle upgrade to #2981.
This PR needs to wait until a stable dokka gets released.

[arturbosch]

New version fixed our problem. Huge diff but works as expected.