Make the base exception extend throwable
Make the base exception extend throwable

This makes it more clear this interface can be 'caught'
vincentchalamon/core,meyerbaptiste/core,vincentchalamon/core,teohhanhui/api-platform-core,api-platform/core,soyuka/core,vincentchalamon/core,meyerbaptiste/core,api-platform/core,teohhanhui/api-platform-core,soyuka/core,api-platform/core,jdeniau/DunglasApiBundle,api-platform/core,soyuka/DunglasApiBundle,soyuka/core,teohhanhui/DunglasApiBundle,jdeniau/DunglasApiBundle,vincentchalamon/core,jdeniau/DunglasApiBundle,teohhanhui/api-platform-core,meyerbaptiste/core,teohhanhui/api-platform-core,soyuka/core,jdeniau/DunglasApiBundle,meyerbaptiste/core