bower conflicts for polymer/paper/core 0.5.6

gistfile1.md

Please note that,
    core-a11y-keys#0.5.6, core-animation#0.5.6, core-collapse#0.5.6, core-component-page#0.5.6, core-dropdown#0.5.6, core-focusable#0.5.6, core-header-panel#0.5.6, core-icons#0.5.6, core-iconset#0.5.6, core-iconset-svg#0.5.6, core-input#0.5.6, core-label#0.5.6, core-media-query#0.5.6, core-meta#0.5.6, core-overlay#0.5.6, core-selection#0.5.6, core-selector#0.5.6, core-style#0.5.6, core-transition#0.5.6, paper-button#0.5.6, paper-dialog#0.5.6, paper-dropdown#0.5.6, paper-dropdown-menu#0.5.6, paper-icon-button#0.5.6, paper-input#0.5.6, paper-item#0.5.6, paper-shadow#0.5.6 depends on polymer#^0.5 which resolved to polymer#0.5.2
    the-graph#9c5e6d6715 depends on polymer#0.5.2 which resolved to polymer#0.5.2
    DAVE depends on polymer#~0.5.5 which resolved to polymer#0.5.6
Resort to using polymer#~0.5.5 which resolved to polymer#0.5.6
Code incompatibilities may occur.


Unable to find a suitable version for webcomponentsjs, please choose one:
    1) webcomponentsjs#0.5.2 which resolved to 0.5.2 and is required by the-graph#9c5e6d6715
    2) webcomponentsjs#^0.5.0 which resolved to 0.5.2 and is required by polymer#0.5.2
    3) webcomponentsjs#* which resolved to 0.5.2 and is required by core-component-page#0.5.6
    4) webcomponentsjs#^0.6.0 which resolved to 0.6.1 and is required by polymer#0.5.6

Prefix the choice with ! to persist it to bower.json

? Answer: 

I'm getting a similar error:

Unable to find a suitable version for webcomponentsjs, please choose one:
    1) webcomponentsjs#~0.5.5 which resolved to 0.5.5 and is required by contentplayer
    2) webcomponentsjs#^0.6.0 which resolved to 0.6.1 and is required by polymer#0.5.6
    3) webcomponentsjs#* which resolved to 0.7.0 and is required by core-component-page#0.5.6