Set first supported version to 1.3
Add property for oldest depecated language version in order to control unsupported ones
Report error on attempts to manually disable language feature from unsupported versions
Update test data, drop compatibility tests for features from unsupported versions
KT-36146 In progress
Arguments are passed in form '-XXLanguage:+LanguageFeatureName' for enabling
LanguageFeature.LanguageFeatureName, and '-XXLanguage:-LanguageFeatureName'
for disabling.
Note that they do override other settings, including 'language-version'
or extra ('-X') args.
Evgeniy.Zhelenskiy