fix LisaMulti read for Android

Math.sh done right (#536)

add missing emscripten #defind in util_thread

use POSIX threads for emscripten; ensure operator overloads are preserved in compiler::bind()

modified for compatibility with new Android version (#539)

fix type query for 'auto'; fix rec.ck example

begin 1.5.5.8-dev cycle

bump version to 1.5.5.7

update release notes; prepare for 1.5.5.7

path replacement options now will support delimited list

minor update to release notes

minor code refactor in util_hid ck_get_mouse_xy_absolute()

update chugin path flag names

modify array capacity semantics and behavior

add unary prefix negate to vec2/3/4 (#534)