Build with latest source to prevent deprecation warnings

[kaliatech]

I understand this is a no longer supported package, however, this might be helpful to others still using this package. In #23 the source was updated to prevent deprecation warnings (thank you!), however, the dist packages were not updated

This PR builds the files in /dist with that latest source. In order to do so using newer tools, I had to update to a newer jake. So, I then went ahead updated all dependencies to latest. As part of that, I had to make a minor tweak to the UglifyJS config.

Changes:

• Newer dependencies
• Modified package version specifier to require leaflet-1.0.0 or newer. (Probably not required in hindsight).
• Modified uglifyjs config to remove a no longer supported option.
• Updates the version in package.json to 0.1.1 in case this ever gets pushed to NPM registry.

Note that running jake test results in an error, likely due to the significant jake version changes. I did not debug.

[jprusik]

Fwiw (and anyone else finding their way here), this worked for me (the dependencies updates did not seem necessary); smoked tested with no obvious (undesired) side-effects:

npm install leaflet.pattern@https://github.com/teastman/Leaflet.pattern/tarball/ac9f69f

[thbar]

Thanks for sharing this ; we are facing a "double-bundling" of leaflet (etalab/transport-site#3376) and it looks like this PR could solve it!

Poke @teastman if you are still around and willing to merge / release package!

[thomaslrg]

Looking forward to the release, @teastman. This PR will be a great addition!

[jeykey]

@teastman @SirenHound would it be possible to get a new release with this fix?
Thank you verry much!