FROB-FRAME: use DISPLAY-FROB; DISPLAY-FROB: New
correct docstring
update for Ig2m design
SIMPLIFY-UNIT: Add description; NORMALIZE-UNIT: Add to design outline; GEOMETRIC-UNIT-EXPRESSION: Remove implementation note; refine description; LINEAR-UNIT-EXPRESSION: Describe orthogonality of symbol / measurement-class interpretations of measurement unit expressions
UNIT-EXPRESSION => UNIT-EXPR
ANGULAR-MEASURE: Rename to PLANE-ANGLE; add note towards defininig a static vector for SI base units
BASE-CONVSERT-MEASUREMENT: correct typo in declaration
CONTAINER-CONDITION: Correct typo in class defn
add docstrings to base-unit domain/class definitions; specify '1893' on tests for foot/mile measurement units
Specify outline for refactored MEASUREMENT-CLASS DESIGN
define stubs for unit-expression classes
move files of m measurements module into own diretory
correct syntax error in sysdef
BASE-MEASUREMENT-CLASS: New, applied in definition of base measurement classes; +SI-BASE-MEASUREMENTS+: New
update for previous changeset
fold LINEAR-DERIVED-MEASUREMENT-CLASS into DERIVED-MEASUREMENT-CLASS
move dimensionless measures into own file
add file header
DIMENSIONLESS-MEASUREMENT-DOMAIN: New, applied in definitions of PLANE-ANGLE, DIMENSIONLESS-MEASURE
add compound-measure file; rename measurement.lisp to measurement-base.lisp; DERIVED-MEASUREMENT-CLASS: new