repeatedly-into as a macro
move thaw exception handler outside of `thaw` (it's recreated everytime the function gets called now)
Housekeeping
Make `coll-thaw`, `coll-thaw-kvs` macros (performance)
Reorganize low-level stream fns (prepping for perf work)
Rewrite all stream helpers as macros (performance)
Update benchmarks (2.0.0-alpha6)
Bump version (2.0.0-alpha6)
Merge branch 'dev'