Rethrow `Error`s from `bookshelf.plugin`.
Rethrow `Error`s from `bookshelf.plugin`.

Previously they were all caught (rather than filtering by the `MODULE_NOT_FOUND` code).

tbutman/bookshelf,tgriesser/bookshelf,jadengore/bookshelf,vellotis/bookshelf,vellotis/bookshelf,princesust/bookshelf,TinOo512/bookshelf,apla/bookshelf,jordansexton/bookshelf,joshturn/bookshelf,patbenatar/bookshelf,zubeio/bookshelf,joshturn/bookshelf,chuym/bookshelf,sxhao/bookshelf,jordansexton/bookshelf,zdespolit/bookshelf,nodeonly/bookshelf,stridentbean/bookshelf,stridentbean/bookshelf,stonegithubs/bookshelf,sanchesic89/bookshelf,shadedprofit/bookshelf,lanetix/bookshelf,tjwudi/bookshelf,chrisbroome/bookshelf,seegno-forks/bookshelf,stonegithubs/bookshelf,VideoAmp/bookshelf,patbenatar/bookshelf,sanchesic89/bookshelf,princesust/bookshelf,MadcapJake/bookshelf,zdespolit/bookshelf,patbenatar/bookshelf,shaunstanislaus/bookshelf,mdboop/bookshelf,offlinehacker/bookshelf,shadedprofit/bookshelf,zubeio/bookshelf,sxhao/bookshelf,jadengore/bookshelf,stridentbean/bookshelf,MadcapJake/bookshelf,rbong/bookshelf,cspotcode/bookshelf,vellotis/bookshelf,chuym/bookshelf,nodeonly/bookshelf,lanetix/bookshelf,seegno-forks/bookshelf,rbong/bookshelf,stonegithubs/bookshelf,apla/bookshelf,chuym/bookshelf,MadcapJake/bookshelf,nodeonly/bookshelf,mdboop/bookshelf,zubeio/bookshelf,offlinehacker/bookshelf,dougshamoo/bookshelf,mdboop/bookshelf,tbutman/bookshelf,VideoAmp/bookshelf,joshturn/bookshelf,tgriesser/bookshelf,shaunstanislaus/bookshelf,tjwudi/bookshelf,TinOo512/bookshelf,chrisbroome/bookshelf,sxhao/bookshelf,shaunstanislaus/bookshelf,zdespolit/bookshelf,TNuzzi/bookshelf,tbutman/bookshelf,VideoAmp/bookshelf,dougshamoo/bookshelf,TNuzzi/bookshelf,cspotcode/bookshelf,bookshelf/bookshelf,bookshelf/bookshelf,jadengore/bookshelf,offlinehacker/bookshelf,sanchesic89/bookshelf,lanetix/bookshelf,tjwudi/bookshelf,TNuzzi/bookshelf,shadedprofit/bookshelf,princesust/bookshelf,dougshamoo/bookshelf