Serpent Code

Better layout support.

Removed "standard" CMAKE_OSX_DEPLOYMENT_TARGET so it is a user-settable option. Default seems to be the latest available, so to make a version that is generally usable on other macs, pick something a few years old, e.g. "10.14"

Fixed UTF8 bug in find() and open() now skips over initial BOM character if found.

Added support for Wxs_color(r, g, b [,alpha]) as an alternative to strings in color methods so you can have a single variable describing an arbitrary color.

Fixed Semantics::init() to initialize noops array pointer.

Fixed missing parameter in Image class initialization.

Fixed vumeter appearance for linux. Fixed Window deletion for linux (problem with menubars).

Improvements/generalization of wxserpent.srp - now groups of controls can be given an id and be parents, allowing for them to share code for deletion and cleanup. See slider.srp for example.

Addressed some issues spotted by compilers.

Modified scheduler to accept 0 with warning for setting BPS. Corrected STOPPED_BPS value to match comment (1 beat per million minutes)