* Improve nimeval, changes some defaults
This improves nimeval to make it easier to use NimScript as an embedded
scripting languages. It does change some of the defaults, so in case
anything used the old version and depended on the old behaviour these
would have to be changed.
* Remove dependency on nimhcr for nimscript
* do not track 'raise Defect' in the .raises: [] clause anymore
* --panics:on maps 'raise Defect' to an unrecoverable fatal error
* make tests green again
* update the documentation too
* `nim doc --backend:js|cpp...`
`nim doc --doccmd:'-d:foo --threads:on'`
`nim r --backend:cpp...` (implies --run --usenimcache)
* --usenimcache works with all targets
* --docCmd:skip now skips compiling snippets; 50X speedup for doc/manual.rst
* added bit operations based on bit slices, clarified documentation, made non-mutating versions of mask ops
* Added since annotations, some runnable examples
* Added mask()/masked() functions, changed internal workings of mask ops to use new bit* funcs
* Changelog updated for new bitops improvements
* Reorganization, added runnable examples
* Documentation adjustments
* Add incltrl for since annotation
* Fix masked() impl
* Fix mask() return type
* Don't call toUnsigned on already unsigned types
* Remove improper `var T` for flipMasked()
* Fix return types for flipMasked()
* Slight syntactic cleanup for *masked ops
* Added tests for bitslice operations, new mask() operation, non-mutating mask ops
* Fix setmasked() var T issue
* More comprehensive tests
* Fix runnable example for bitsliced()
* Fix runnable example for mask()
* Add posix_memalign()
* Add linux-specific open() flags
O_TMPFILE: since Linux 3.11
O_PATH: since Linux 2.6.39
O_NOATIME: since Linux 2.6.8
O_DIRECT: since Linux 2.4.10
* Fix Stat type
* Fix POSIX AF_INET* const generation
* added high level sendTo and recvFrom to std/asyncnet; tests were also added.
* add .since annotation, a changelog entry and fixed to standard library style guide.
* fixes net.recvFrom to work correctly with IPv6
* raise if domain is not AF_INET or AF_INET6
* renamed template to adaptRecvFromToDomain()
* added high level sendTo and recvFrom to std/asyncnet; tests were also added.
* add .since annotation, a changelog entry and fixed to standard library style guide.
* Improved asserts msgs and added notes for use with UDP sockets
* pointers removed in parameters and fixes
* added .since annotation
* minor fixes
