Updated README with a better description of the project

Fixed typo with last commit ...

Editing via GitHub is living dangerously

Force attached version manifest's ID to be that of the game version ...

Without this, you have to modify the attached version.json file first, which is a pain.

Set a user agent for HTTP requests ...

It is now "Mozilla/5.0 (Java) SKMCLauncher"

Call .getAbsoluteFile() when making the parent directory in PackageBuilder

Changed project version to 4.2.3-SNAPSHOT.

Updated README.md.

Bump to v4.2.2.

Check hash of existing file in case a download is not required.

Don't set updatePending = false if manifest URL is not available.

Fixed formatting issue.

Bump to 4.2.1.

Merge branch 'origin/unixfix'

Polished the fix a bit.

Attempt to fix Unix support

Bump to v4.2.0.

Fixed window icon in FeatureSelectionDialog.

Added ServerCopyExport tool.

Added minimum version for packages.

Added launch modifier to packages.

Added support for user files and features.

Ignore /local_launcher.properties in Git.

Added system property to load an additional launcher.properties.

Added pretty print option to package builder.

Renamed open folder menu items.

Fixed directory opening.

Bump to v4.1.2.

Indeterminate progress bar for instance list loading.

Added more detection of broken instances.

Catch instance removal failures.

Added "Launcher console" button to config dialog.

Improved handling of broken instances.

Added console log button to ProgressDialog.

Added better handling of failed downloads.

Improved assets expanding, downloader messages.

Better handling of LauncherException in error dialogs.

Bump to v4.1.1.

Added back additional library path.

Fixed incorrect location for install log and version cache.

Bump to v4.1.0.

Made ProgressDialog's progress bar taller.

Allow "Check for updates" to also check for launcher updates.

Rewrote updating mechanism to be more reliable.

Bumped to v4.0.5.

Fixed usedHashes not being utilized in Installer.

Bump to v4.0.4.

Force passing of a VersionManifest instance rather than an assets index ID.

Bump to 4.0.3.

Made InstallLog synchronized.

Bump to v4.0.2.

Fixed downloading of assets index.

Fix error in ClientFileCollector.

Skip _OPTIONAL folders in ClientFileCollector.

Bump to v4.0.1.

Made instance name detection case in-sensitive.

Fixed issue with update button always appearing.

Initial commit.