Package Dependencies

Please make all external package that is used in TightBinding on its dependencies, so people do not need to install additional package manually.

This is the error i get from repl with no package installed, but TB

ERROR: LoadError: LoadError: ArgumentError: Package TightBinding does not have Plots in its dependencies:
- If you have TightBinding checked out for development and have
  added Plots as a dependency but haven't updated your primary
  environment's manifest file, try `Pkg.resolve()`.
- Otherwise you may need to report an issue with TightBinding
Stacktrace:
 [1] require(::Module, ::Symbol) at ./loading.jl:836
 [2] include at ./boot.jl:326 [inlined]
 [3] include_relative(::Module, ::String) at ./loading.jl:1038
 [4] include at ./sysimg.jl:29 [inlined]
 [5] include(::String) at /home/runner/.julia/packages/TightBinding/VnJza/src/TightBinding.jl:1
 [6] top-level scope at none:0
 [7] include at ./boot.jl:326 [inlined]
 [8] include_relative(::Module, ::String) at ./loading.jl:1038
 [9] include(::Module, ::String) at ./sysimg.jl:29
 [10] top-level scope at none:2
 [11] eval at ./boot.jl:328 [inlined]
 [12] eval(::Expr) at ./client.jl:404
 [13] top-level scope at ./none:3
in expression starting at /home/runner/.julia/packages/TightBinding/VnJza/src/Plotfuncs.jl:2
in expression starting at /home/runner/.julia/packages/TightBinding/VnJza/src/TightBinding.jl:2
error during bootstrap:
LoadError("main.jl", 7, ErrorException("Failed to precompile TightBinding [db00978d-8b5b-52b5-bbe7-ff451c144724] to /home/runner/.julia/compiled/v1.1/TightBinding/WFO8M.ji."))
rec_backtrace at /buildworker/worker/package_linux64/build/src/stackwalk.c:94
record_backtrace at /buildworker/worker/package_linux64/build/src/task.c:217 [inlined]
jl_throw at /buildworker/worker/package_linux64/build/src/task.c:417
error at ./error.jl:33
compilecache at ./loading.jl:1197
_require at ./loading.jl:960
require at ./loading.jl:858
require at ./loading.jl:853
jl_apply_generic at /buildworker/worker/package_linux64/build/src/gf.c:2219
jl_apply at /buildworker/worker/package_linux64/build/src/julia.h:1571 [inlined]
call_require at /buildworker/worker/package_linux64/build/src/toplevel.c:397 [inlined]
eval_import_path at /buildworker/worker/package_linux64/build/src/toplevel.c:432
jl_toplevel_eval_flex at /buildworker/worker/package_linux64/build/src/toplevel.c:630
jl_parse_eval_all at /buildworker/worker/package_linux64/build/src/ast.c:883
jl_load at /buildworker/worker/package_linux64/build/src/toplevel.c:826
exec_program at /gocode/src/github.com/replit/prybar/languages/julia/pry.h:48
runtime.asmcgocall at /usr/lib/go-1.10/src/runtime/asm_amd64.s:688