#t and #f added to language, datetime fixes

Readme.md

@@ -71,18 +71,16 @@ utils/local_install.sh
 - add some mem stats to benchmark
 
 #### Code
+- MlEnvironment::get should be map instead of many if's
 - add documentation
 - add more unit test, mainly for usql
-- rename constants in ml_profiler.h
 - add instrumentation (time, nr of evals, num of atoms, debug info, debug environment etc)
 
 #### Language
-- support for "#t" or "t" symbol as a true and "#f" for false
 - string functions
     - compare - needed for sorting, cmp ignore case
     - regexp match, regexp tokens    
 - date support
-  - local-time - convert epoch to local time
   - decode-universal-time (http://www.lispworks.com/documentation/HyperSpec/Body/f_dec_un.htm)
 - env functions 
   - get-env, set-env; set-env cannot be implemented in stdlib.lsp, because popen is in fact subshell