Merge pull request #274 from just-boris/master

expand step when its attachment is selected
TestNG SPI support (#273)
Merge pull request #275 from baev/testng-spi

TestNG SPI support (#273)
Update README.md
add - allure lifecycle listener (fixes #184)
Merge pull request #257 from baev/step-listener

allure lifecycle listener (fixes #184)
refactoring. Remove commons-io dependency
add - maven central badge
Merge pull request #276 from baev/master

refactoring. Remove commons-io dependency
change logger level
Merge pull request #278 from baev/master

change logger level
[maven-release-plugin] prepare release allure-core-1.4.0.RC4
[maven-release-plugin] prepare for next development iteration
Updated year in LICENSE
add version attribute to testsuite.xml
Merge pull request #279 from baev/model-version

add version attribute to testsuite.xml (fixes #229)
add programming language and testing framework labels to testsuite.xml
Merge pull request #280 from baev/add-info-to-model

add programming language and testing framework labels to testsuite.xml
add code signature, maven version and jdk version checks
Merge pull request #281 from baev/pom-changes

add code signature, maven version and jdk version checks