Delta multiplier added to Editor Properties.
New emitters are configured as bare-boned skeletons.

Initial emitter remains the same however.
Update NetJavaImpl.java

issue 1576
Update Net.java
Update IOSNet.java
Added Rectangle functionality

Added the ability to calculate the aspect ratio and center position, as
well as centering to a point, and fitting inside/outside another
rectangle
calculate -> get and returns
Forgot to change centerTo->setCenter and more chains
returns the matrix4 from lerp() to allow chaining
Merge pull request #527 from g-pechorin/patch-1

returns the matrix4 from lerp() to allow chaining
Model/Mesh builder small changes
Merge pull request #525 from JonECG/rectangle

Added Rectangle functionality
Fixed a very important typo.

Somebody Ctrl-C'd + Ctrl-V'd.

time for a `git blame` :D
Fixed my typo trying to fix a typo

I am not a smart man.
Merge pull request #528 from sinistersnare/master

Fixed a very important typo.
Merge pull request #529 from xoppa/master

Model/Mesh builder small changes
Avoid flush if blending doesn't need to be changed.
Improved native library extraction and loading.

I've found a small percentage of users can't write to the temp directory. Eg:
https://code.google.com/p/libgdx/issues/detail?id=1504
These changes improve the chances of being able to extract and load a library. For load(), multiple locations are tried to extract and load the library. For extractFile(), multiple locations are tried to extract the file.
Merge branch 'origin/master'
Dont use iterator, meshpart.equals and untransformed node bounds