… gRPC

gRPC may not be such a good idea after all: large library footprint + initialisation time cost
If the booter is long-running this wouldn't be an issue though

tested with adam's tests

separate multi-module bundles
quick fix for report path length
use classloader switch for handling test parsing
add debug booter flag

# Conflicts:
#	buildSrc/src/main/kotlin/Versions.kt
#	cli/src/test/kotlin/com/malinskiy/marathon/cli/config/ConfigFactoryTest.kt
#	core/src/main/kotlin/com/malinskiy/marathon/extension/StringExtensions.kt
#	core/src/main/kotlin/com/malinskiy/marathon/io/FileManager.kt

Core:
- queue should print list of currently active tests when closing prematurely
- impose file path limit of 255 characters instead of file name limit of 256
- file names should escape special characters (except . and #)
- html report should handle long file names

JUnit4:
- enhance junit4 configuration: add parallelism, forkEvery, javaHome, javaOptions and useArgfiles
- write junit4 device log files to investigate device failure under debug mode
- junit4 booter should switch classloader instead of inheriting the classpath from booter (doesn't scale to multiple modules)
- increase gRPC message limit to 32M (need to rework the api to streaming)
- don't save empty logs
- handle Ignore annotation (actual execution is messed up and doesn't fire proper events)

… classpath

- booter startup retries
- shadow runner classes

# Conflicts:
#	buildSrc/src/main/kotlin/Versions.kt
#	core/src/main/kotlin/com/malinskiy/marathon/execution/queue/QueueActor.kt
#	core/src/main/kotlin/com/malinskiy/marathon/extension/StringExtensions.kt
#	core/src/main/kotlin/com/malinskiy/marathon/io/FileManager.kt
#	core/src/main/kotlin/com/malinskiy/marathon/report/html/HtmlSummaryReporter.kt
#	core/src/test/kotlin/com/malinskiy/marathon/io/FileManagerTest.kt
#	html-report/src/components/Pool.js

- Inherited tests
- Abstract parent test class
- Java options verification

Allow configuration of test execution mode in booter from marathon configuration

…rties