optimize bootstrap target to avoid unnecessary writes
optimize bootstrap target to avoid unnecessary writes

was writing all files on every compile which makes watch a bit
slower than it needs to be. should only write actually changed
files now.

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