I just installed Energia 1.8.7E21 on macos 10.12.6.
From the Finder, the Energia version number is a little goofy.
It shows "${version}" instead of the actual text.
This is seen in the "Info.plist" file, and can be fixed there.
...
<key>CFBundleShortVersionString</key>
<string>${version}</string>
<key>CFBundleVersion</key>
<string>1.8.7</string>
...