biber-2.9

[bdubbs@…]

New minor version.

[ken@…]

for biber itself:

Misc bugfixes.

For biblatex-3.9,

## Bug fix release
- Fix `\mkpagetotal`
- Fix issue with refcontexts not appearing in some circumstances
- ** DEPRECATION NOTICE ** The coming update to the ISO8601 standard
     supercedes the draft EDTF (Extended Date Time Format) extensions.
     When the new ISO8601 standard is public, biblatex will therefore
     support the ISO8601-2 Clause 4, Level 1 Extended Format which is
     equivalent to the draft EDTF standard but with different syntax. This
     syntax is in some cases not backwards compatible. Biblatex will not
     support backwards compatibility for the draft EDTF syntax because it is
     too messy to do so and few people were using this anyway since it is a
     relatively new and specialised feature. Please note these syntax changes
     which will effect only the formatting of DATE fields in bibliography
     datasources:
     - The "unspecified" marker `u` is now `X`
     - An approximate+uncertain date is now indicated with `%` rather than `?~`
     - Open dates are now marked with `..` instead of `open` or blank start/end dates.
     - Unknown dates are now indicated by blank start/end dates rather than `unknown` or `*`

[ken@…]

r19539.