Added @expan to <abbr>

Present in EAD 2002. Was missing in Beta.
Added @abbr to <expan>

Present in EAD 2002.  Was missing from beta.
Created section for language attributes

First template is for converting @langcode to @lang in appropriate
contexts, starting with <abstract>.
Created section for @type to @localtype

Template will need to ennumerate which instances of @type will need to
be converted to @localtype.
Added archref/abstract to skip template
Removed unnecessary line break
Created <addresline> section

First pass at migration strategy for <addressline> outside of
<publicationstmt> and <repository>, the only places it remains.
unitid/@type

Added to @type to @localtype migration
Deleted whitespace
Skip subtitle/date and subtitle/num
Deleted whitespace
Deleted whitespace
Deleted whitespace
Added titleproper/@type to @localtype template
Added titleproper/num to skip
Added accessrestrict/@type to localtype template
1st attempt at accessrestrict/legalstatus
Added @localtype to legalstatus

In EAD 2002, <legalstatus> had @type, so it should become @localtype in
EAD3
Added altformavail/@type to @localtype
Added phystech/@type to