Update description of @type and @code

fixes IATI/IATI-Standard-SSOT#14
[IATI/IATI-Extra-Documentation#60] Code list -> codelist
[#64] Rename supporting-information to exactness
Add the fss element change to the CHANGES.txt

Fixes #25 - where this change was not recorded in the 1.03 upgrade
[#64] supporing-information -> exactness in schema changelog
Update iati-activities-schema.xsd

Alters the documentation on the version attribute to reflect that the default should be 1.01 and not 1.0
Remove title line from related-activity description, fixes #84
[#21] Use same @version description for iati-activities and iati-activity
[#74] Update document link url example
[#73] Remove name dropping
[#79] Update iati-identifier description to mention organisations
[#89] Remove erroneous deprecation notice
[#41] Remove misleading e.g. line from schema
[#87] Project -> activity
[#86] Rearrange schema element order

Note: this change is merely presentational, and places no constraints on
the order the elements must be supplied in IATI XML.
[#83] Remove "To cross-reference these reports ..."
[#29][IATI/IATI-Standard-SSOT#7] Add license file
[#90] Use pos instead of coordinates
[#94] Add note about GML to point element
Fixes #35

Updates the documentation for location-type