Fix scenery node leak (adding many magnets on top of each other), fixes #54
Start coil in a "Reset" state, fixes #56
Revert "#33 SCENERY_PHET/CurvedArrowNode now used curved for arrows for switchMagnetButton"

This reverts commit b6a5a5cf2c7242508ca7e4e4cf6d446009041b4c.
Tweeaks to match appearance of original
Version bump to 1.0.0-rc.3
Merge branch 'master' into 1.0
updating dependencies.json