Sysrepo

This version features the following improvements:

- complex subscription utility functions
- direct support for `ietf-subscribed-notifications` subscriptions
- plugin callback API changes
- structured error support
- arbitrary user data support
- connection init and destroy callbacks
- support for disabling (mirroring) `running` datastore per module
- support for originator-side XPath filtering (flag `SR_SUBSCR_FILTER_ORIG`)
- avoids redundant subscriber notify
- improved data manipulation concurrency (irfanHaslanded)
- detailed NACM access-denied errors
- lots of other bugfixes and improvements

This release depends on libyang ([v2.1.148](https://github.com/CESNET/libyang/releases/tag/v2.1.148))

This version features the following improvements:

- minor lock refactoring and reordering
- many bugfixes in various parts of the library
- lots of bugfixes for specific and complex corner cases

This release depends on libyang ([v2.1.111](https://github.com/CESNET/libyang/releases/tag/v2.1.111))

This version features the following improvements:

- `sr_discard_items()` function for discarding stored operational changes
- key-less list data retrieval fixes
- module data tree build optimizations
- minor internal refactoring
- various other improvements and bugfixes

This release depends on libyang ([v2.1.80](https://github.com/CESNET/libyang/releases/tag/v2.1.80))

This version features the following improvements:

- datastore plugin API improved
- `factory-default` datastore support
- preferred `CLOCK_MONOTONIC` use
- parallel module change event notify
- minor optimizations
- other bugfixes and fixed corner-cases

This release depends on libyang ([v2.1.55](https://github.com/CESNET/libyang/releases/tag/v2.1.55))

This version features the following improvements:

- default datastore format changed from LYB to JSON
- has negligible performance impact and is much more robust
- some specific high-demand scenario optimizations
- `sr_cond_futex` active waiting fixed (by irfanHaslanded)
- datastore files permission problems fixed
- native `schema-mount` support
- other minor bugfixes

This release depends on libyang ([v2.1.30](https://github.com/CESNET/libyang/releases/tag/v2.1.30))

This version features the following improvements:

- alternative futex-based (Linux only) conditional variable implementation
- automatically used if futex is available
- is robust unlike `pthread_cond_t`
- support for batch module install/remove/update
- new operational poll subscriptions
- allow caching of pull operational data
- multiple same xpath pull operational subscriptions
- notified in parallel
- simplified deletion of stored oper data
- subscription event corner-case data race handled resulting in a stale event
- invalid data cache crashes fixed
- `sysrepo-plugind` internal plugins with YANG configuration
- oper poll diff
- stored notification rotation
- lots of other fixes and improvements

This release depends on libyang ([v2.1.4](https://github.com/CESNET/libyang/releases/tag/v2.1.4))