maintenance release: pshell import, elog, documentation

* bugfixes in pshell import
* updates to elog interface: templates, login, separate persistent and volatile data
* new header and revision information in documentation

.gitattributes

@@ -0,0 +1,20 @@
+.git* export-ignore
+#*.ipf diff=igorpro
+# git diff --check should output something useful
+*.ipf whitespace=indent-with-non-tab,tabwidth=4
+# mark files as binary
+# you can also add -delta if you regularly
+# commit large files of these types
+*.ibw binary
+*.xop binary
+*.pxp binary
+*.pxt binary
+*.uxp binary
+*.uxt binary
+*.ihf binary
+*.ifn binary
+*.ift binary
+
+# automatic end of line normalization
+*.ipf eol=lf
+