Move most file-local variables from calc.h to calc.c (so calc.h can be included)
Quick hack to get simple TYPE_LAMBDA evaluated
Add pebcom files for time/vibe/eventually battery etc. functions
Add TYPE_OTHER, so that pebble-specific (and potentially other) objects can be used in PebbLisp
Created PebbleObject/PebbleType to work as a sort of tagged pointer, to be used as a TYPE_OTHER object
Add some functions for creating/editing windows and textlayers from within PebbLisp
Added subscribe(), enabling lambdas to be run at set time intervals
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