Move type declaration to dev dependencies
Move type declaration to dev dependencies

Those declarations are causing errors when compiling code using @cycle/time
feliciousx-open-source/cyclejs,cyclejs/cycle-core,usm4n/cyclejs,feliciousx-open-source/cyclejs,cyclejs/cycle-core,cyclejs/cyclejs,feliciousx-open-source/cyclejs,staltz/cycle,ntilwalli/cyclejs,cyclejs/cyclejs,staltz/cycle,feliciousx-open-source/cyclejs,cyclejs/cyclejs,ntilwalli/cyclejs,usm4n/cyclejs,ntilwalli/cyclejs,usm4n/cyclejs,ntilwalli/cyclejs,cyclejs/cyclejs,usm4n/cyclejs