bug: Incompatible library version
@niftylettuce might be able to fix this with yarn's lock file.

```
[AGENDA] module.js:602
[AGENDA]   return process.dlopen(module, path._makeLong(filename));
[AGENDA]                  ^
[AGENDA] 
[AGENDA] Error: dlopen(/Users/xo/code/lad/template/node_modules/custom-fonts-in-emails/node_modules/sharp/build/Release/sharp.node, 1): Library not loaded: @rpath/libvips-cpp.42.dylib
[AGENDA]   Referenced from: /Users/xo/code/lad/template/node_modules/custom-fonts-in-emails/node_modules/sharp/build/Release/sharp.node
[AGENDA]   Reason: Incompatible library version: sharp.node requires version 50.0.0 or later, but libvips-cpp.42.dylib provides version 48.0.0
[AGENDA]     at Object.Module._extensions..node (module.js:602:18)
[AGENDA]     at Module.load (module.js:507:32)
[AGENDA]     at tryModuleLoad (module.js:470:12)
[AGENDA]     at Function.Module._load (module.js:462:3)
[AGENDA]     at Module.require (module.js:517:17)
[AGENDA]     at require (internal/module.js:11:18)
[AGENDA]     at Object.<anonymous> (/Users/xo/code/lad/template/node_modules/custom-fonts-in-emails/node_modules/sharp/lib/constructor.js:9:15)
[AGENDA]     at Module._compile (module.js:573:30)
[AGENDA]     at Object.Module._extensions..js (module.js:584:
[AGENDA] 10)
[AGENDA]     at Module.load (module.js:507:32)
[AGENDA]     at tryModuleLoad (module.js:470:12)
[AGENDA]     at Function.Module._load (module.js:462:3)
[AGENDA]     at Module.require (module.js:517:17)
[AGENDA]     at require (internal/module.js:11:18)
[AGENDA]     at Object.<anonymous> (/Users/xo/code/lad/template/node_modules/custom-fonts-in-emails/node_modules/sharp/lib/index.js:3:15)
[AGENDA]     at Module._compile (module.js:573:30)
[AGENDA] [nodemon] app crashed - waiting for file changes before starting...
```