tea-core

tea-core is used at run time in 5 crates.

Depender (with downloads and own rev deps)			tea-core version
	1	tea-rolling		^0.5.1
	1	tea-agg		^0.5.1
	1	tea-map		^0.5.1
	2	tea-dyn		^0.5.1
		tevec		^0.5.1