mil-sym-js release v0.3.39 RC1

This is being put out as a release candidate as minimal testing has been done as this is still a dead project.

-Fixed modifier definitions for FLOT, CFL, RFL.
-added outline support for method renderSPTG (thanks kicha)
-SVGTextInfo, added missing getTextBounds function
-SinglePointSVGRenderer, adjusted scaling of Single Point Tactical Graphics when KeepUnitRatio == true. It should be closer to the scaling in SinglePointRenderer.
-fixed color setters in RendererSettings (thanks kicha)
-fix error on non latin symbols & null checks (thanks Sergey)
-allow user to override 'N' modifier and make it something other than ENY (thanks kicha)
-icons representing multipoints can now be outlined
-Line of Contact rendering fixes
-Limited Access Area modifier fixes