Release version 1.27.2

Fixes since 1.27.1:
- fix assumption of hash-table vs lhash table in deletion of resources

Release version 1.27.1

Fixes since 1.27.0:
- use lhash table for delete calls
- verify type of referred resource in has-one relationship

Release version 1.27.0

New features:
- More efficient DELETE by using UNION queries
- More caching of (static) domain-dependent calculations

Fixes since 1.26.0:
- Also clear relations which are not specified on the resource to be
  deleted but which are specified as an incoming relationship

Release version 1.26.0

New features:
- support for unknown literal datatypes
- better error messages for single-valued properties with multiple values
- extra info to help triplestore delete resources

Fixes since 1.25.0:

Release version 1.25.0

New features:
- print backtrace on server error with limited info to frontend API
- better printing of error conditions

Fixes since 1.23.0:
- fix relationship removal when predicate has multiple target types
- cache clearing on delta messages with only partially known info

Release version 1.24.0

NOTE: Contains more agressive cache clearing.  If your app is read-write
and you depend on mu-cache for speed, this release may not be optimal
for your application.  Test accordingly.

New features:
- cache clearing for filters

Fixes since 1.23.0:

Release version 1.23.0

NOTE: Contains more agressive cache clearing.  If your app is read-write
and you depend on mu-cache for speed, this release may not be optimal
for your application.  Test accordingly.

New features:
- experimental arm64 builds
- optional support for native booleans
- experimental accepting of types which can't exist in a
  relationship which can serve as temporary workaround for reused URIs.
- consistent use of "true" vs "yes" in documentation filter (@x-m-el)

Fixes since 1.22.0:
- major improvement to consistent use of cache keys and clear
  keys (great reporting and first stab by @sfenoll)
- better clearing of internal mu-cl-resources cache
- clear inverse "1"-side of relationships when inverse key on update
- empty included relationships are returned as null or [] (performance
  improvement discovered by @gauquiebart)
- booleans are now returned as a JSON boolean rather than a string
- more primitive types are now correctly returned

Realising 1.22.2

Fixes since 1.22.1:
- more primitive types are now correctly returned

Release version 1.22.1

Fixes since 1.22.0:
- booleans are now returned as a JSON boolean rather than a string

Release version 1.22.0

NOTE: !! this release expects mu-authorization 0.6.0-beta.8 or later !!

New features:
- support for xsd:time through :time primitive (thanks to @bdevloed and @nvdk)
- support for basic :or: filters (thanks to @erikap)
- support for :no-case: modifier in sorting (for @elpoelma)
- faster included queries through CONSTRUCT queries (tanks to @sergiofenoll @cecemel @nvdk @Windvis)
- faster communication with database through Dex
- faster thread-happy internal hash tables with luckless
- catch all errors before they reach the frontend
- newer quicklisp and sbcl libraries
- faster restart and shutdown

Fixes since 1.21.0:
- fixes for delta clearing on instance removal