add L externs just in case someone uses leaflet
add L externs just in case someone uses leaflet

leaflet always exports window.L which can cause problems in
:advanced builds.

thheller/shadow-cljs,thheller/shadow-devtools,thheller/shadow-cljs,thheller/shadow-devtools,thheller/shadow-devtools,thheller/shadow-cljs,thheller/shadow-cljs,thheller/shadow-devtools