Update simdjson to 4.2.4 (#111)

* updated rockspec and to simdjson 4.2.4

* updated README to indicate new Lua/simdjson version

Update simdjson to 4.2.3 (#105)

Update simdjson to 3.12.3 (#101)

Removed old rockspec (#96)

Update simdjson to 3.10.1 (#91)

Update to simdjson 3.10.0 (#88)

Update to simdjson 3.9.5 (#83)

* switched to ondemand parser

* removed LIBS_PATH and debug symbols

* a bit smarter about `pushinteger` and `pushnumber` for Lua 5.3+

added luarocks install info

added activeImplementation for debugging purposes

fixed typo