Mojang has changed its manifest format for 1.13.
Forge is no longer a universal jar, it requires more hosted files, all of which are generated by the installer.
We can no longer extract the version manifest from forge's jar and have to include it in the distribution.
This commit adds support for launching forge only, mods are currently not supported from the distribution.
Handling of 1.13 launches are subject to change as we move forward.
If anything happens to the forked process, the main should now pick up on it and alert the user.
Should no longer get 'stuck at 100%' issues when the forked process fails, for whatever reason.
Removed commonDirectory.
Removed instanceDirectory.
Added dataDirectory. The common and instance directories are now resolved from this.
The config.json and distribution.json are now stored in Electron's data folder (app.getPath('userData')).
Users can edit the dataDirectory under launcher settings.
Added saving function, add pack button, drag and drop functionality to the button, ability to
refresh the list of packs.
Added height limit to the dropdown with scrolling. Cleaned up some styles.
In 1.12.2, some natives do not provide a rules
object and instead just omit the classifier
from the natives object. We now check for that.
Updated electron to v3.0.12.
You can now drag one or more files onto the add mods button in order to add them to the mods directory. Only jar, litemod, and zip files will be moved.
Changed eslint to use a single configuration file, with overrides for the UI scripts.
Now using fs-extra, replace usages of rimraf and mkdirp with fs-extra functions.
If the instance mods directory does not exist when the 'Add Drop-In Mod' button is clicked, it will be created.
The update selected server code has been modified. Previously, the server would be updated before the mod config was saved. This has been fixed so that the mod config is saved before the server is switched.
Updated electron to v3.0.10.
