refs #6978, refs #6752, refs #21613, refs #24234
The `jsNoInt64`, `whenHasBigInt64`, `whenJsNoBigInt64` templates are
replaced with bool constants to use with `when`. Weird that I didn't do
this in the first place.
The `whenJsNoBigInt64` template was also slightly misleading. The first
branch was compiled for both no bigint64 on JS as well as on C/C++. It
seems only `trandom` depended on this by mistake.
The workaround for #6752 added in #6978 to `times` is also removed with
`--jsbigint64:on`, but #24233 was also encountered with this, so this PR
depends on #24234.
* Add more Date wrappers to jscore
* Times cosmetic changes
- Improved docs
- Code wrapped at 80 chars
- Formatting fixes using nimpretty
- Remove some old deprecated procs
* Support code hot reloading for JavaScript projects
* Add some missing JavaScript symbols and APIs
* fix the Travis build
* (review changes) remove the js type from the standard library as it doesn't follow NEP-1
* more additions to the DOM module
* Follow NEP-1 in jsffi; spell 'hot code reloading' correctly
* introduce a jscore module
* Document jscore module.
* readded js type
* Remove the '$' operator that doesn't behave
