Package rename: ome.scifio to io.scif

The ome.scifio package has been removed in favor of io.scif. This is the
first stage in separating the scifio-devel component to its own product.
It also avoids package clashing with Bio-Formats 4.5.x which contains a
scifio-devel component under the ome.scifio namespace, but not the new
SCIFIO API.
Updated the scifio-devel group and artifact id

These are now io.scif and scifio, respectively. This prevents clashing
in Maven between the SCIFIO API jar and the Bio-Formats scifio-devel
component.
ImgSaver uses StatusService

ImgSaver now uses StatusService to report saving progress instead of
notifying attached status listeners.
Added getWriterByExtension method

Added a method to FormatService to directly get a writer for a given
id, based purely on suffix matching.

This allows bypassing of the Checker logic, which may not be applicable
when an Image source is not available for opening - because it has not
been written yet.

Only returns non-DefaultWriter instances.
Relaxed OMETIFF translation

Removed the exact match flag when searching for a translator for
creating OMEMetadata and TIFFMetadata when translating to OMETIFF
format.

This was only working in tests because it was testing through the legacy
layer which always translated using a MetadataStore wrapped in
OMEMetadata.
Rename get/setInfo methods to get/setPlaneInfo

This avoids a method clash with newer versions of scijava-common.
Update pom-scijava version and GAV coordinates

Updated to pom-scijava v1.44 which includes the differentiated
bio-formats and scifio version/groupIds.

Updated dependent projects accordingly.

Note that we must override scifio.version to 0.1.0-SNAPSHOT.
Eliminate SNAPSHOT dependency on parent POM

This change has substantial ramifications:

1) It reiterates some configuration from what was previously the
   "pom-scifio" project parent.

2) It changes the transitional Bio-Formats artifact dependencies from
   4.5-SNAPSHOT to 4.4.8. This pins all of core SCIFIO's dependencies to
   stable release versions. But it also creates a slight version
   mismatch for the multi-module reactor as a whole (e.g., for
   components/bio-formats). Fortunately, Maven dependency versions are
   not fixed in stone unless you explicitly do it (by enclosing the
   version in "[]" brackets), so surprisingly, everything still compiles
   with passing tests.

The eventual goal is to migrate Bio-Formats-specific components into a
scifio/bio-formats fork, in preparation for later contribution back to
Bio-Formats upstream. Non-Bio-Formats-specific project forks and stubs
(i.e., jai_imageio and lwf-stubs) will live in the scifio project space
on GitHub as separate Git repositories, versioned separately (they are
almost never updated).

But for the moment, this structure works to build and deploy the code...
Clean up dependencies

Remove the direct sezpoz dependency, since we only rely on it
transitively from scijava-common.

Also add a note saying we need log4j at runtime despite the warning from
dependency:analyze (this matches other similar notes).