fix wiki links

update readme

Add todo to readme

make block exportable

temporary fix bug on writing to LowCardinality(Nullable(FixedString c…

…olumns

fix bug on writing to LowCardinality(Nullable columns

add queryID to select, insert and exec

add LowCardinality func to select

get bock function for select

Add DateTime64, more work on code generator (I should work more), upd…

…ate protocol version