Merge branch 'release/1.6.3' into develop

* release/1.6.3:
  bump to v1.6.3
Replace symbols that are dependent to emit-symbol in unit tests
apend me
add -> camelCase util function
use new *symbol-map* and ->camelCase in emit-symbol
avoid printing in tests
keywords as keys in maps should be emitted as symbols
symbols are no longer valid maps' keys
make case-test independent
keywords are now processed with emit-symbol before emitted
Keywords "invoke" forms are now processed by emit-symbol
use hyphen->underscore in last step of emit-symbol
support emitting native javascript division via js-divide
bump to version 1.6.4-SNAPSHOT
Merge branch 'release/1.6.4-SNAPSHOT'

* release/1.6.4-SNAPSHOT:
  bump to version 1.6.4-SNAPSHOT
  support emitting native javascript division via js-divide
  use hyphen->underscore in last step of emit-symbol
  Keywords "invoke" forms are now processed by emit-symbol
  keywords are now processed with emit-symbol before emitted
  make case-test independent
  symbols are no longer valid maps' keys
  keywords as keys in maps should be emitted as symbols
  avoid printing in tests
  use new *symbol-map* and ->camelCase in emit-symbol
  add -> camelCase util function
  apend me
  Replace symbols that are dependent to emit-symbol in unit tests
add if-in-if-tests
binding *inline-if* to true inside all if
emit-statement no longer care about *inline-if*
Merge branch 'hotfix/if-in-if'

* hotfix/if-in-if:
  emit-statement no longer care about *inline-if*
  binding *inline-if* to true inside all if
  add if-in-if-tests
set default reserved-symbols to blank