For developing any bukkit version:
Spigot API versions Maven page list
1.8.8 https://www.spigotmc.org/wiki/bbcode.2618/archive 1.9 https://www.spigotmc.org/wiki/bbcode.3313/archive 1.9.2 https://www.spigotmc.org/wiki/bbcode.3694/archive 1.9.4 https://www.spigotmc.org/wiki/bbcode.4024/archive 1.10 https://www.spigotmc.org/wiki/bbcode.4248/archive 1.10.2 https://www.spigotmc.org/wiki/bbcode.4553/archive 1.11 https://www.spigotmc.org/wiki/bbcode.5241/archive 1.11.2 https://www.spigotmc.org/wiki/bbcode.5645/archive 1.12 https://www.spigotmc.org/wiki/bbcode.6699/archive 1.12.1 https://www.spigotmc.org/wiki/bbcode.7295/archive 1.12.2 https://www.spigotmc.org/wiki/bbcode.7471/archive 1.13 https://www.spigotmc.org/wiki/bbcode.9204/archive 1.13.2 https://www.spigotmc.org/wiki/bbcode.10030/archive 1.14.1 https://www.spigotmc.org/wiki/bbcode.10743/archive 1.14.2 https://www.spigotmc.org/wiki/bbcode.10851/archive 1.14.4 https://www.spigotmc.org/wiki/bbcode.11424/archive 1.15.1 https://www.spigotmc.org/wiki/bbcode.11730/archive 1.15.2 https://www.spigotmc.org/wiki/bbcode.12010/archive 1.16.1 https://www.spigotmc.org/wiki/bbcode.12354/archive 1.16.2 https://www.spigotmc.org/wiki/bbcode.12636/archive 1.16.3 https://www.spigotmc.org/wiki/bbcode.12766/archive 1.16.4 https://www.spigotmc.org/wiki/bbcode.13047/archive 1.16.5 https://www.spigotmc.org/wiki/bbcode.13202/archive 1.17 https://www.spigotmc.org/wiki/bbcode.13592/archive 1.17.1 https://www.spigotmc.org/wiki/spigot-maven/