tag for release

tag for release

Tagging 3.1.5 release, closed issues #2, #4, #6, and #7.

3.1.5-rc.2: updated to *strict* semantic version for external tools/s…

…ervices.

  note: replaces previous 3.1.5-rc2 tag.

3.1.5-rc2: rollup of minor fixes and semantic versioning tag for travis.

This is the (re)tag of 3.1.5 RC1 maintenance release, including history

and changelog files.

This commit was manufactured by cvs2svn to create tag 'V3_1_4'.

This commit was manufactured by cvs2svn to create tag 'V3_1_3'.

This commit was manufactured by cvs2svn to create tag 'V3_1_2'.

This commit was manufactured by cvs2svn to create tag 'V3_1_1'.