Fix javadoc compiler errors and upgrade pom

TakahikoKawasaki / nv-i18n

Package to support internationalization, containing ISO 3166-1 country code enum, ISO 639-1 language code enum, etc.

Apache License 2.0

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Fix javadoc compiler errors and upgrade pom #68

Open rpolton opened 4 years ago

rpolton commented 4 years ago

Fix javadoc compiler errors and upgrade pom plugin and dependency versions. Extract these versions to maven properties so that we can use the maven version plugin to update them automatically in the future.