remove convention-plugins.

tentatively revert to kotlin 2.0.x and specify JDK 17 to make tests p…

…ass.

actually we could publish everything from macos-latest.

release 0.1.5.

release 0.1.4.

release 0.1.3.

release 0.1.2.

signing alterer script could not be copied from ktmidi...

it's not ktmidi.

switch to maven central...

The thing is, jitpack artifact ID does not match mavenLocal artifact ID
due to the groupId difference, as well as alphabet-injected version name
from the tags.