changed spring mesh optimizer,  it now does a more accurate physical
simulation with adjusting discrete step sizes according to the maximal
force and speed of any vertex

TODO more bugs expected, fix accuracy problems in spring mesh and vertex
by using double, improve performance by not iterating sets and
maps where an array would do
made SpringMesh use double instead of float for calculations
do not print the percentage in smoothness filter
use arraylist where arraylists are returned
almost full float to double transfer of vertex and spring mesh
Transform_SpringMesh for testing the adjusted optimizer
Merge branch 'master' into spring-mesh2
TransformMesh constructor with PointFactory/PointMatchFactory

TODO not yet tested, needs to be extended to SpringMesh
Merge branch 'spring-mesh2' into spring-mesh3
cosmetics for alternative jars
comments fixed
Merge branch 'master' into spring-mesh2
Fixed Stack_Rotate overwriting the pixel content of the stack slice
that was active when the plugin was started.  Fixed also the intermediate
'blackness' during animation.  Both effects were introduced by a change
of how the ImagePlus.updateAndDraw() method works in ImageJ core.  Didn't
notice it earlier.
Merge branch 'spring-mesh2' into spring-mesh3
Merge branch 'master' into spring-mesh3

Conflicts:
	mpicbg/src/main/java/mpicbg/models/AbstractModel.java
set mpicbg.version to 0.6.1-SNAPSHOT for half-compatible spring-mesh
changes
be explicit with the version number of parent pom
set pom-fiji.2.0.0-SNAPSHOT instead of pom-scijava.1.17 as parent
use mpicbg.version from parent pom-fiji
Fix version in root pom.xml

The groupId, artifactId and version declaring a project (as opposed to a
dependency) cannot be specified via properties. The groupId and version
can be inherited from the <parent> definition, but that does not apply
here.

So let's just set the version explicitly and be done with it.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>