update documentation (#11) - update readme.md - add multiMap_demo.ino - add multiMap_2d.ino; simulates map float => {x, y} position. - minor edits

add multi type multiMap (#10) - add multi type **multiMap<T1, T2>** to reduce RAM and speed up lookup. - add multi type **multiMapBS<T1, T2>** binary search version. - add example for multi type - update examples - update readme.md - minor edits

add multiMapCache and multiMapBS template functions (#8) - add **multiMapCache()**, experimental version that caches the last value. to be used with input that do not change often. - add **multiMapBS()**, experimental version that uses binary search. to be used with arrays > 10 (rule of thumb) - add examples - major rewrite readme.md

add changelog.md (#6) * add changelog.md

update library.json, readme, license, minor edits (#5) * update library.json, readme, license, minor edits

fix CI build 

Arduino ci (#2) * add arduino-ci * add unit test

Merge pull request #1 from RobTillaart/develop fix library.json

0.1.1 version