xml: generate random IDs for annotations if none were assigned

version bump

updated for stam-rust v0.18.6

fromxml: allow specifying a desired output file with --inputfiles

The output file can be in any column and has a > prepended to its name.

Also fixed some typos

xml: fix for context variables

they need NOT all be strings now, and the bug that produced literal quotes
is fixed.

documented id_strip_suffix

updated for stam-rust v0.18.5

updated for stam-rust v0.18.4

bumped dependency version, lowered main version (was .1 ahead)

version bump