GitLab

Fix encoder

plantumlEncoder deprecated the use of encodeSync, so it's better to use the correct version here.

The deprecation also caused the encoder to stop working.

Since plantuml run in a single process when using nailgun, it's
protected by a lock. The lock was also set when decoding, making
it impossible to pipe the stream to another plantuml operation in
nailgun.

The API was adding start and stop tags when generating from text.
The purpose for this was so that they wouldn't be needed when
using the CLI. The functionality was moved out of the API and into
the CLI code.

A function for file encoding has been left from earlt protypes.
It has now been removed.

The test images are now generated before running tests, this
way the images will always be in the format produced by PlantUML
on the currently running machine.

In order to support older versions of node, all usage of
util.isFunction was removed and replace with a standard type check.

Add support for character set options

The build script was wrong so the jar file ended up unusable in
previous commit. It has now been fixed.

The nail directory and it files was missing from previous commit
for setting inlude path.

By adding a custom nail wrapper to PlantUML it is now possible to
set the nailgun dir as an include directory.

A .DS_Store file was added by mistake before it was added to
gitignore.