missing closing parantheses
Merge pull request #2878 from simonbyrne/master

missing closing parantheses in test/complex.jl
filter: add methods for generic filtering with regexes.
Try to find modules in PACKAGE.jl as well

This change adds a case to `find_in_path` that attempts to find
directories appended with ".jl" as well.

The trend seems to be naming package repositories as PACKAGE.jl, but you
then had to clone packages to a local directory stripped of the ".jl" so
that files could be found.

No more!
add detach() option to Cmd, fixes #1960
also fix #2846
Clean up `find_in_path`

Use `joinpath` instead of `string` for building paths and string slicing
instead of regex matching to remove ".jl" from the name.
Merge pull request #2880 from zachallaun/require-jl

Try to find modules in PACKAGE-NAME.jl as well
Updates first few sections of the manual

Mainly affects the two sections about primitive numbers and elementary operations.

[x] Adds videos from MIT tutorial to Getting Started
[x] Consolidates and tabulates primitive types, operators and elementary functions rather than having them in list form
[x] Adds sections about overflow behavior of integers and signed zero float values
[x] Expands documentation for eps
[x] Documents `\` and `^` operators
[x] Minor formatting changes and spelling and grammatical corrections.