Bumps [spotbugs-annotations](https://github.com/spotbugs/spotbugs) from 4.2.1 to 4.2.2.
- [Release notes](https://github.com/spotbugs/spotbugs/releases)
- [Changelog](https://github.com/spotbugs/spotbugs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/spotbugs/spotbugs/compare/4.2.1...4.2.2)
Signed-off-by: Ndependabot[bot] <support@github.com>

Fix broken links

Merge pull request #242 #243

Bump junit from 4.13.1 to 4.13.2

Bumps [junit](https://github.com/junit-team/junit4) from 4.13.1 to 4.13.2.
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/main/doc/ReleaseNotes4.13.1.md)
- [Commits](https://github.com/junit-team/junit4/compare/r4.13.1...r4.13.2)

Bump rxjava from 2.2.20 to 2.2.21

Bumps [rxjava](https://github.com/ReactiveX/RxJava) from 2.2.20 to 2.2.21.
- [Release notes](https://github.com/ReactiveX/RxJava/releases)
- [Changelog](https://github.com/ReactiveX/RxJava/blob/v2.2.21/CHANGES.md)
- [Commits](https://github.com/ReactiveX/RxJava/compare/v2.2.20...v2.2.21)
Signed-off-by: Ndependabot[bot] <support@github.com>

Bump spotbugs-annotations from 4.2.0 to 4.2.1

Bump kotlin.version from 1.4.21-2 to 1.4.30
Merge pull request #239 from alibaba/dependabot/maven/kotlin.version-1.4.30

- use future.get instead of sleep
- assert message content
- static import assert* method

- adjust pom gav:
  - groupId: com.alibaba -> com.alibaba.ttl
  - artifactId: ttl-vertx -> vertx4-ttl-integration
  - version: 1.0.0-SNAPSHOT -> 0.5.0-SNAPSHOT
- rename module dir: ttl-vertx -> vertx4-ttl-integration
- adjust package
  - com.alibaba.ttl.agent.extension_transformlet.vertx -> com.alibaba.ttl.integration.vertx4
  - com.alibaba.ttl.agent.extension_transformlet.vertx.transformlet -> com.alibaba.ttl.integration.vertx4.agent.transformlet
- pom cleanup/improvement, prepare for deploy
  - remove unused kotlin properties in pom
  - add more pom elements

Feature/vert.x support

- add missing package-info.java
- add missing @since
- adjust badges in README

LinkedHashSet

- use LinkedHashSet for red extension class names/lines, express read order explicitly
- return pair instead of output parameter for method readLinesFromExtensionFiles

JdkExecutorTtlTransformlet

- use method instead of static filed

for application use dynamic load, classloader count is far more than 16

! final AbstractExecutorTtlTransformlet.doTransform method, make abstract class closed to modifications

- TTL option getter methods: isLogClassTransform, getLoggerType
- Generic option getter methods: isBooleanOptionSet

- use extension file(`META-INF/ttl.agent.transformlets`) instead of agent config
- be able to auto discovery by adding dependency jar of extension transformlets